My little sister just started at university and is living in halls with 8 other people, 4 of which are guys. The boy who lives in the room next door to hers one night when they had a night out and she wasn’t at home, he came back before her, put open condoms on her door handle, over the taps at her sink, and in her bed. He left his pubic hair on her desk with a yellow sticky note saying ‘pubes’ with an arrow. When she told me, I cannot describe the pure anger i felt that he had done this to her. She feels ashamed, and doesn’t want to tell our mum as she feels she should have done something to prevent this. I have told her to report it to the university security, but she refuses saying she ‘just wants to forget about it’.