It's not RAPE if you ENJOY it! And she SURE seems to enjoy it!

I don't believe that's entirely accurate. If she didn't ask for it, or otherwise couldn't say no, then it's rape, regardless of how enjoyable it may have been. I will concede, however, bondage =/= rape.

She does kind of have this, "Oh no. Stop. You monster." look. She's just really underwhelmed by the whole situation.

this is why I don't trust wizards, except for Gandalf