The sister of a bride-to-be who has been missing for three days says the 26-year-old is 'so in love' with her fiance and could not possibly have cold feet. Stephanie Scott, an English and drama teacher, was last seen at her workplace Leeton High School in Leeton, 550km west of Sydney, at 11am on Easter Sunday. At 12.59pm on Sunday afternoon she sent an email from the school to a bus company arranging transport for guests for her upcoming wedding this Saturday. That was her last known activity. Ms Scott's parents plan to hire a helicopter to join the desperate search for their daughter, as they fear her disappearance has something to do with 'her car or foul play'. Scroll down for video . Stephanie Scott (right), pictured with her fiance Aaron Leeson-Woolley, was last seen on Easter Sunday . A month before her planned April 11 wedding she texted her sister to say she was 'so freakin excited' Family say the 26-year-old is 'so in love' with her fiance and could not possibly have cold feet . Ms Scott in Canberra last month on a wine tour for her hen's party with her mother Merrilyn . A Police image of a car similar to Ms Scott's - a red Mazda 3 sedan with NSW registration BZ-19-CD. Her vehicle is also missing and family fear she may have had an accident . 'It is the worst thing I have ever been through. You can't eat and you can't sleep,' mother Merrilyn Scott told AAP on Wednesday. 'I think today, if we don't find her today ... you can't let yourself think about it but you do.' As friends and community members turned out in Leeton to search surrounding roads, her parents began organising a helicopter to search from the sky. 'It's cold and we are running out of days,' Mrs Scott said. She said while the area was flat, there were a lot of irrigation ditches, creeks and crossings. On Wednesday, police released an image of the car Ms Scott was travelling in, a red Mazda 3 sedan with the NSW registration BZ-19-CD. A NSW Police spokesman told Daily Mail Australia authorities were investigating Ms Scott's disappearance but were not deploying search teams to look for her. 'We don't actually have a location of where she may be, the best lead we have is that she's in a car,' he said. 'That why the appeal's gone out to look for her car. Ms Scott (left) pictured with her sister Kim Scott (right) who said she spent Sunday morning picking up last-minute things for her wedding and honeymoon to Tahiti . Kim Scott said her sister had designed the invitations and handmade pots for the reception table placements . Kim Scott said her sister was 'excited' about marrying her partner of five years Mr Leeson-Woolley, adding that she 'just wouldn't' run away . Saturday April 4: Stephanie Scott drives 45 minutes to nearby Griffith to pick up cuff links for the groomsmen and a bikini for her honeymoon to Tahiti . Saturday 1pm: A friend sees Ms Scott at Woolworths in Leeton . Saturday 7pm: Ms Scott talks to her sister Robyn on the phone for 55 minutes, expressing how excited she is about her upcoming wedding . Sunday 10am: She texts her fiance Aaron Leeson-Woolley to tell him about her plans for the morning . Sunday 11am: Ms Scott meets a colleague at her workplace - Leeton High School - to pick up a set of keys . Sunday midday: Mr Leeson-Woolley tries to call Ms Scott but she does not answer . Sunday 12.59pm: Ms Scott sends an email from the school to the bus company she has hired for her wedding . Sunday 7pm: Ms Scott fails to show up for a planned dinner date with her fiance in Leeton . Monday 3pm: Mr Leeson-Woolley reports to police that Ms Scott is missing . Monday 4pm: Family members start posting on Facebook asking for help in locating Ms Scott . Tuesday 11.54am: 48 hours after she was last seen, police appeal for public assistance to locate Ms Scott, saying they are investigating the circumstances surrounding her disappearance . Tuesday afternoon: Police door knock houses in the area surrounding Leeton High School . Tuesday night: Police search the school . Wednesday 8.37am: Ms Scott's sister Kim, who fears her car may have rolled of the road, asks public to help search along roads in the area . Wednesday 11.12am: Police release an image of a car similar to Ms Scott's missing red Mazda 3 sedan . 'The current information is that she's taken off in a car – there's no information to believe she's wondered off in any particular area which would constitute a search.' Her sister Kim Scott said she spent the weekend picking up last-minute things for her wedding and honeymoon to Tahiti. She also sent a text message a month before her April 11 wedding date saying she was 'so freakin excited'. 'People are saying maybe she got cold feet, it's definitely not cold feet she's so in love with [fiance Aaron Leeson-Woolley],' Ms Scott told Daily Mail Australia, adding that her bank accounts have not been used since Saturday. 'She spent [Saturday] shopping for her honeymoon. 'She'd driven to Griffith in the morning to get cuff links for the boys, and a bikini for the honeymoon.' She texted her fiance Mr Leeson-Woolley at 10am on Sunday about her plans for the morning, and got a pair of keys from a school colleague at 11am, but when he tried to call her at midday there was no answer. Her last known location is the school, where she sent the email to the bus company just before 1pm. On Sunday afternoon, Mr Leeson-Woolley - who had been visiting his parents in Canowindra three and a half hours away - drove back to Leeton and was due to meet Ms Scott for dinner at 7pm but she never showed up. On Wednesday, Police issued a photo of a car similar to Ms Scott's missing red Mazda 3 sedan, with NSW registration BZ-19-CD. Kim Scott said she was worried her sister's car had rolled off the road, and she posted on Facebook asking people to help search for Ms Scott along roadsides in the area. 'Please, anyone available or who can make themselves available, get yourselves to Leeton and the surrounding areas and check those roads. Go slowly. We need as much help as we can.' Family have also begun the heartbreaking task of cancelling arrangements for the wedding. On Sunday, Stephanie Scott was at Leeton High School to organise work for her students to do while she was away. 'She went to the school to plan work for her students while she was on her honeymoon,' Kim Scott said. 'Then she was meant to meet Aaron for dinner [in Leeton] on Sunday and never showed.' On Saturday morning, she went shopping in Griffith. A friend saw her at a Woolworths supermarket at Leeton about 1pm and she spoke to her sister Robyn Scott on the phone on Saturday night. Desperate family and friends have flooded social media with dozens of messages about their search for the Leeton High School drama and English teacher . Ms Scott spoke to her sister Robyn on the phone for 55 minutes on Saturday night about how excited was . Kim Scott said 'It's really hard for Aaron to hear' people speculate his finacee has cold feet . Their wedding was planned to take place at the Eat Your Greens function centre in the NSW town of Eugowra . Kim Scott said her sister was 'excited' about marrying her partner of five years Mr Leeson-Woolley this coming Saturday, adding that she 'just wouldn't' run away. 'It's really hard for Aaron to hear that, obviously it's three days she's been missing,' Ms Scott said. 'Our sister Robyn spoke to her for 55 minutes on the phone on Saturday night about how excited she is about marrying him. 'She wants to get married and wants to be there.' Kim Scott said her thoughtful and crafty sister had handmade flower pot table placements and designed invitations for the wedding. 'She was the most thoughtful person - my birthday was on Easter Monday and she didn't message me and that's just not like her,' she said. 'I've lived in London and now I live in Abu Dhabi and if I've ever had a birthday or big event she's the first one to send a card. On Sunday she spoke to a friend on the phone, saying she was 'excited' about marrying her partner of five years Aaron Leeson-Woolley (right) this coming Saturday . Police have asked anyone who might know of her whereabouts or have any information to come forward . 'Even with cold feet she wouldn't not message me on my birthday, it's got to be something more than that.' Ms Scott's Facebook profile photo shows her on a wine tour in Canberra last month for her hen's party, smiling and wearing a veil and 'Bride-to-be' sash. The couple got engaged in Thailand and their wedding was planned to take place at the Eat Your Greens function centre in the NSW town of Eugowra. Mr Leeson-Woolley said he last spoke to Ms Scott at 10am on Sunday morning. 'I was in Canowindra, back at mum and dad's place, and she was in Leeton,' Mr Leeson-Woolley told the Sydney Morning Herald. 'Everything seemed pretty fine. 'One of her friends rang her on Easter Sunday and she was saying how she was excited and couldn't wait. That's the last time [anyone heard from her].' Mr Leeson-Woolley told ABC: 'I've been with her for five years and... [her disappearance is] just out of the blue, out of character for her.' Officers plan to review CCTV footage from Woolworths and look into Ms Scott's phone and bank records . They say Ms Scott could be travelling in a red Mazda 3 sedan with registration BZ-19-CD . Desperate family and friends have flooded social media with dozens of messages about their search for the Leeton High School drama and English teacher. Police said they hold concerns for Ms Scott's welfare. Officers plan to review CCTV footage from Woolworths and look into Ms Scott's phone records and bank statements. Police have asked anyone who might know of her whereabouts or have any information to come forward. Anyone with information should call Crime Stoppers on 1800 333 000 or Griffith Police on 6969 4310. Ms Scott was last seen at her workplace, Leeton High School (pictured), about 11am Easter Sunday . She was seen at a Woolworths supermarket at Leeton (pictured) 550km west of Sydney, on Easter Saturday .
Stephanie Scott was last seen at Leeton, 550km west of Sydney, on Sunday.
High school teacher is due to marry her partner of five years on Saturday.
Police have grave concerns as her disappearance is 'out of character'
Family fear her red Mazda - also missing - may have rolled off the road.
They have asked the public to help search along roadsides in the area.
Her parents plan to hire a private helicopter to assist with the search.
The 26-year-old spent the weekend she disappeared picking up cufflinks for the wedding and a bikini to take on her honeymoon to Tahiti.
Family have begun the heartbreaking task of cancelling wedding plans.