From Inside the Grey House:
For the next month, she asked politely, giving him reasons as to why she should train. He continued to say no, despite her valid arguments. She felt she needed to stay in shape and keep her fighting skills honed. She was still searching for Donald and expected to find him and kill him herself. She also thought that being able to fight vampires would make her better able to handle Vincent in bed. There was no good reason for him to say no, but he did every time, never giving her a reason.