"IF"......you asked for help that is but this girl just straight went to the blackmail instead so I say that he shouldn't help her all the more, plus she doesn't even want to tell MC about the problem she is facing even when MC already heard about it to some extent.
So she won't ask her parents but she will ask a classmate to put himself on the line while she does fuck all. FUCK THIS THOT. START TAKING MONEY FROM HER LIKE THE OTHERS.