She's interested, maybe she was busy.

It's difficult sometimes when you plan things in secret, all it takes is one of ther parents to suggest going somewhere and she loses her window, she can't exactly say "I've got plans" now can she?!

I'd suggest talking to her parents, tell them that you want to keep seeing her and are prepared to go to her church if that's what it takes but that you don't want to feel like a hypocrite because you don't believe.

Hopefully they'll try and talk you into the church and in so into the "family".