Let me get this straight...now that she got her way, abandoned you when you were found out, went along with her crazy dad/family, and hangs with the disapproving elders she has a sudden change of heart and thinks you were right all along?
Sounds like a real piece of work to me! It could be that she wants you back and is missing your company. Sometimes it takes losing the best thing you ever had to realize you were wrong. Perhaps that is her experience.
Maybe you can help her get out and fade. This is certainly your daughter's best hope at having a cult-free life.
I understand you have started a new relationship, however, it would be rather romantic to court your ex-wife all over again--this time as "worldly" persons;-)