My husband and I aren't religious people, he's atheist and I'm whatever, I dont care. My mom and step dad however are christian, go to bible studies, church etc, which I don't care about. We have a 2 year old dd that sometimes spends the night, but the last time she came home she started imitating praying which bugged me. We both think it's a choice she should make for herself when she's old enough to understand and not be taught one thing or the other. I asked my mom not to pray with her and she got upset. She said she wasn't going to be "phoney" around her and she's going to keep doing her thing. I told her then she probably doesn't need to be with them on Sundays then, when they go to church.
When she's old enough to ask questions about any type of religion I'll be more than happy to show her resources. I don't think someone else's preference should be taught to her.