And sometimes it will change after they get the guy they want. I ended up divorced after my wife of 25 years decided she wanted to sow some wild oats with someone not as reliable as I. Someone who was more on the wild side, not someone who held a steady and well paying job, someone who worked very hard to be home in the evenings with family, not someone who stayed faithful by staying away from temptation.
She ended up living with a guy about 10 years her junior, who is a loading dock worker. Oh, btw, she's more conservative that I and claims to be more devoted to Christ in her life. Go figure.
Unless there is a whole lot missing in your account of events, she is a liar.
She's not devoted to Christ, not a Conservative, and certainly someone you should be glad to be rid of.