This is what's throwing me for a loop. It's almost like it's one of those cases where she wanted to get married, but was only interested in the sexual side to get you to marry her. It's odd that it stopped like the night of the wedding. Also, her not wanting to be involved in the therapy sounds like there's something else going on. Like something bad happened to her in her childhood that she doesn't want to talk about and might be leading to intimacy issues.