Does Catholicism have a notion of "the God in me"? While being interviewed on the NPR radio show "On Being," lobbyist, lawyer, and nun Sister Simone Campbell said of developing compassion for her political opponents (at around 31:30),


  A few years ago on retreat, my retreat director did push me to realize that I have a list that, of folks that I call 'mistakes of God' and, you know, [jokingly] people that should have been voted off the island, it was God on an off day, [the audience laughs and she continues in a serious tone] but you know what? I came to realize that  if I was at odds with the God in them, then I'm at odds with the God in me.


This last statement struck me as something a Buddhist or Hindu practitioner would say, not a Catholic. Do any Catholic doctrines or Traditional teachings explain a Catholic notion of the God in you and the God in me, where recognition of the divine aspect of or in another person demands or motivates compassion?
Sister Simone kindly responded to my email asking this question. She said:


  "If I just said Holy Spirit, it would slide over like water. Also to an interfaith audience who doesn't necessarily hold a Trinitarian faith it seemed more inclusive to me. I also know that God continues to create us at every moment so it isn't just the "image" of God but God who keeps us loved and alive."