It's not that Anne wanted to do any of that, it's that her Father and Uncle had seen an opportunity and they had jumped on it. She was simply their biggest chess to piece to play, and they were going to use her to every advantage. Mary was just the appetizer before the main course.
Thomas raised an eyebrow. "You didn't seem to complain while you were sharing the King's the bed," he replied curtley. "And I'll have no complaining from you now. Your sister was there for you, and you will be there for her. You will be with your husband and you've been away long enough that no one will care about you anymore."