I do see all your points now, thank you.

I think there is value in solving problems without altering schedule/classes/logistics or even switching colleges if Sally can, because altering the logistics is a self-sacrifice/accommodation.

But if she cannot, then surely the next step would be the logistics.

I do not think that switching colleges is prudent though, because 1) too much self-sacrifice and hassle 2) there is no guarantee that the situation will not repeat itself - attractive female grad students would get approached by male professors of humanities in either college. The situation is not specific to this particular college.

I think it makes sense to switch colleges if there is something about the new college that was not there in the old college. Say, the new college is better ranked in subject ABC (just as an example). So you switch from old college to new college to end up with a more ratable degree. But since the presence of male professors is not unique to any college (I think they teach in all-girls private schools, even), there is no point in changing colleges.