The car alarm was definitely going off when she did "her deed." You can see it in the video.
I doubt they can kick someone out. The worst they could do is fine her, which I doubt they'd do either. They probably will say that this is a matter between her and the car owner...
Yeah, it's amazing to me that of all people that would do this, it was her. There are others in my building that wouldn't have surprised me at all, but her? Weird.
Like Mark said above, she must have thought that the owner of the car could be an homeowner or a guests car. It's lucky for her that it was a rental, but she didn't know that... Really bad behavior.
- Jon