I know this might sound weird but i was just thinking that what if parvati did see mayank but he is not the rapist it could be true that she did see him but mabye he is just taking revenge for what happened to eklavya and later on it would be disclosed who the rapist really is?
just because she saw him hurting kt does not automatically make him the rapist right
anways this is assuming that mayank is the one she saw i know im jumping ahead lol still think it was abhir!