Did she make a mistake though? I wonder how much of a choice she actually had.
I think theoretically you have a (slim) choice, but practically - no. One reason is the hierachie involved. Clinton was the president of the USA - you have respect for the office, the whole setting (White House) most likely intimidates you and you feel it is not your place to deny him. Things like that happen quickly. Plus: She did the internship because she thought it looks good on her CV. So what would the consequence be if you denied him? Would the internship continue? What would your parents, friends etc say if you were send home after a few days?
The public has been very harsh with women - I think about Amber (can't remember her last name) in the Scott Peterson case. She dated Scott Peterson after he told her that he was a widower. She came forward when she realized that he might have killed his wife and that he had fed her with a lot of lies - still, she got roasted publicly. She did (IMO) nothing wrong. She dated. She was lied to. She spoke up to help the wife he betrayed. She was publicly tared and feathered in the process. All she did wrong was that she trusted him and his narrative (which sounded believable).
I guess the same thing happened to Andrew and the girl. This (innocent 17 year old) girl might have been so overwhelmed that she went along with it, she might have thought that marriage or becoming a princess was on the cards for her and later she realized that she was abused for some quick fun only and her only purpose there was to entertain randy Andy - nothing in it for her ... It could have happened to anyone, any age.
When you are 17 you know how to act adult without being an adult. You are able to handle normal everyday adult situations in a mature manor but you have no idea what to do if that situation is different than you thought and de-rails. After all it is a world you have just entered. If she came from a sheltered background she might have never encountered people as mean as Epstein before. Heck, most "adult adult" people would have not met a person like Epstein before.