God is in the Pancakes by Robin Epstein

Smart-ass 15-year old candy striper Grace has met her match with smart-ass nursing home resident Mr. Sands. She probably should have been fired after she busted him out and they went to a movie. But when he asks Grace to help him kill himself rather than be further ravaged by Lou Gehrig's disease, she's got a big choice to make.

Without being heavy-handed, this is a great book that deals with belief, morality, and ethics. I think it would be a great book for a family read or a teen book discussion - there's a lot to ponder. Even Grace acknowledges she's not sure what she would do, looking back or in the future.