Just cause?

Just cause he wanted to actually be able to tell her no was more like it. She was pretty sure that he enjoyed knowing he was the only one she let get away with telling her no.

"If you insist on knowing, I was just thinking of what other silly things I could get you to do. Not that it really matters since you're just gonna tell me no." Like she was actually going to accept no for an answer anyway. He may think he gets away with telling her no but she knows what buttons to push to get her way with him. She'll just wait until he least expects something and then get him to do it.

Yep... she knew all she had to do was wait and she would be able to get her way with him.