shows a bit of the molestation, plus some reactions from the public. The page includes some clear photos, plus the video near the bottom (video plays immediately, so get ready to scroll!)
What I get from all that is that she was very drunk and unable to properly defend herself. Perhaps she was enjoying some of the attention, and it spiralled out of control and there she was, being gang-groped. She looks distressed in the photos, and her body language in the video points toward discomfort. I took into account what little I know of asian body language as well, and it still seems like she wasn't enjoying herself.
Also, she may have been dressed to impress, but I think she failed to consider the actions of all those drunk and horny guys. Hindsight's a bitch.