So she has a history of sexual assault, yet her reaction to a pervy prof asking for nude photos was to send the photos rather than saying to herself "learning some physics is not worth this crap" and blocking him on facebook/email/whatever and sending the logs/etc to the university.
Yes he is the one abusing his position of authority. he is the one at fault (taking MIT's investigation of the matter at face value - I don't have the details they have after all). That doesn't mean she can't make some better decisions in the future.
If it was a prof at a university you were attending who you will bump into over and over again over the next few years and who is respected by the rest of the academic staff you deal with you have an actual dilemma since they can screw you over if you don't comply with their abuse. But in this case there's no loss in just bailing out - well other not getting to have a perv teach you physics which sounds like a plus really.