This was a movie that came out awhile ago about a girl in her 20's who is released from a prison in Maine and gets a job as a waitress at a diner. It is owned by an older woman(?? ) who gets sick, and eventually the girl takes over the diner.
There is a part where the older woman isn't sure if the girl can be trusted, as there is some money missing, but of course she didn't take it. Really good movie.

It kind of sounds like the movie, "The Spitfire Grill". Not 100% sure on that though. Let me know.