LOL mental illness makes u do things out of your control. Bad decisions are generally made due to conscious, intentional efforts. So no its not mental illness
Plus women don't care about being respected by men anymore. Why should the girl u mention care about what some random dude thinks of her ? The opinion of the average man means nothing to a woman, and really it shouldn't, unless that man is her teacher, boss, or family member who's feelings she should consider. If she was going dressed like that for a job interview or something of equal importance u would have a point. I would hope this was a large lecture class so that she wouldn't run the risk of the teacher responsible for her grade holding it against her.
But changing her style of dress so some random losers who probably can't offer nothing but dikk and bubble gum can respect her

boy bye. Do u let the opinions of irrelevant women shape decisions in your life ? I hope not