Guardian Episode 3

first two eps - just bored. This one - puzzled and confused.

1. Why did that teacher accept the invitation from a student? Is this normal at all to party out with your students? 2. I understand that she was raped. Why didn't she report to the police? Is this a normal behavior for a Chinese woman or just for a professor in the city of dragons? 3. Why is she calling that female student "a family"? Just because she supported her at hard times? It is not properly explained and leaves a strange trace. I'll give this show a chance for a couple of more episodes but it doesn't look good.