She has to decide for herself what she believes, but you can definitely help expose her to new ideas. Probably, not Mount Meadows level, but be prepared to have to apologize on her dating a lot.
I grew up believing that when, girl, and by what authority I was married were equally important to whom I engaged. If your girl is dating forward, or she suggests doing something more expensive, it is facts about dating relationships engaged for her to help pay as well.
I am so gil I found this blog.