Welcome to Psych Central! I would think an ex should understand no contact now that you are married. Just tell her that, and you're glad to hear from her but can't continue a relationship. And maybe tell her directly that she would find a relationship with the Lord to be very comforting and gratifying or something like that. Then end of story.

I suggest praying for her salvation, but I don't think you should try to keep steering her in the right direction. My pastor husband agrees with what I've said.

You don't say what kind of problems she's having, but maybe also suggest counseling for her......