AITA for telling my sister she was not raped?

According to her story, her friends and also his were leading them to the empty room with chanting that they fuck. The guy seemed to have no problems with this but she says she felt embarrassed and didn't want to but didn't want to say "no" because it would make her feel more humiliated. She also told me that while she never told the guy to stop or that she didn't want it, she said it was obvious in her eyes that she did not want it. She says he probably knew deep down but didn't care. I was like, "Not necessarily..." One last thing, Amy also claims while she drank, she felt more sober than him and her friends too. So he was the one who was more intoxicated according to her story.

/r/AmItheAsshole Thread Parent