I work long hours in the day usually up into just before midnight. Most days I stay up texting her if I'm not at hers whilst I'm doing other stuff and tell her when I'm tired/going to sleep. Sometimes when we are texting I am prone to falling asleep mid texting and after the 2nd time it pissed her off. 

The other night she needed me and was feeling down and I tried my best but I just fell asleep again, this was at like 2 a.m. I try to explain that I am exhausted in the morning but she's just cold and snappy, like 'you weren't there when I needed you'. She's already an extremely needy person whereas I am quite the opposite. 

It's starting to piss me off that *she* is having a go at me for what I think is a perfectly normal human behavior. I don't know how to approach this or explain my point any further without causing an argument. 

What do?
user
I fall asleep texting girlfriend in the middle of a
assistant
I work long hours in the day usually up into just before midnight. Most days I stay up texting her if I'm not at hers whilst I'm doing other stuff and tell her when I'm tired/going to sleep. Sometimes when we are texting I am prone to falling asleep mid texting and after the 2nd time it pissed her off. 

The other night she needed me and was feeling down and I tried my best but I just fell asleep again, this was at like 2 a.m. I try to explain that I am exhausted in the morning but she's just cold and snappy, like 'you weren't there when I needed you'. She's already an extremely needy person whereas I am quite the opposite. 

It's starting to piss me off that *she* is having a go at me for what I think is a perfectly normal human behavior. I don't know how to approach this or explain my point any further without causing an argument. 

What do?
user
I get really tired mid after texting my SO, she
assistant