[Coffee.]

I would look more into the school's policy. I feel it should be okay for you to acknowledge that a student's individual beliefs and lifestyle are positive. For example, you could tell that student that it is good that she's found that place in her life. But you'd have to be consistent across religions/lack of religions; for example, if a Muslim student were to make the same comment, you'd have to encourage them the same. I seem to remember many of my teachers talking about religion in public school from an outside but positive perspective; for example, my second grade teacher having a Jewish student do a presentation about Chanukah for diversity teaching. Teachers shouldn't teach what students SHOULD believe religiously, buti see nothing wrong with encouraging an already Christian student about her faith. But that's just me. Look into what the policy is.