She went with three girlfriends and got very drunk after having vodka, red wine and beer.
Mistake number 1!
After a check with her friends, she realised that she had been sexually assaulted
Only
after checking with her friends? Were these friends looking after her after she "got very drunk"? It doesn't sound like it.
I don't condone rape, at all, but to get very drunk, in this part of HK, not having made reasonable arrnagements to have one's 'friends'watching each other's backs, is foolish.