Some people are just so inconsiderate, I mean who needs all those clothes anyway.... But, Ballroom dancing is expensive. I know I used to be a tango dancer. And the costumes alone could pay for a small house. However, I was always taught that if you break it you bought it. Besides as you say she cleaned the carpets on her own because the "dirt" bothered her. as for the lock she didn't ask you to replace it.
But the closet does need to be in working order, how else is she expected to hang all those costumes up?