I told her about my preferred home church still she ignores it.
Something similar happened to me at work with someone who tried to get me into mindfulness meditation.
Its not just me she has invited other coworkers but they declined right away to go to her church.
Are you sure that it is a church and not a cult?
Sometimes people will invite you to a special event that their church is having or to hear a special speaker- that's fine. But to invite you over and over again especially when your behavior has indicated that you aren't interested has all the markings to me of a cult ( and sounds like harassment ).
If she asks you again, you could say that you are more comfortable at your church. Remember also, that 'No' is a complete sentence, you don't have to tell her anything besides that.
Her behavior borders on cult recruitment.
Just tell her to beat it because you already have a church home.
I don't see the "cult-like" behavior from the little info we're getting here.... it's more like behavior from someone who is in the dark or being strung along. I believe a lot of the problem is miscommunication or not being clear/truthful with her.