Acknowledging sex assault, of any form, should not be a taboo topic. This is especially true if it played a formative role in shaping your character and ambitions, and the question you're asked inquires directly after your character and ambitions, as most personal statement prompts do.
As long as your PS is ultimately tailored to sell yourself, sell your skills, prove your ambition, demonstrate your commitment, evince your passion, etc., then I think you can write about anything you want. Numerous people on this board can attest that a PS about sex assault can be very effective. A friend of mine could tell you that an adcomm made the effort to get in touch with her and give her highly positive feedback about her PS, which was about sex assault.
People on here are advising you against writing such a PS on the basis that they find the topic risky, they find it controversial, they find it negative, they find it disconcerting ... whatever. I would advise that you inquire after the source of any advice on this board before you take it, because as will invariably happen in this thread, the people telling you not to write about it are basing such advice on their own personal feelings, and the people telling to you write it are basing it on their own personal experiences. Big difference. Huge.
If you've more specific questions, please don't hesitate to PM me.
True, acknowledging sexual assault of any form should not be taboo, but that doesn't mean its a good topic for your personal statement.
Whether it's risky or not is beside the point; what you should be asking yourself is whether the topic is going to provide you with compelling material for your PS. If you feel like it does, then you should give it a try.
Also, the bolded is bullshit. Just because this person knows someone who allegedly wrote a successful PS on this topic does not mean that everyone encouraging you to write on this topic is invariably speaking from experience. Even if this were the case, it still would not guarantee a positive outcome for you because there are too many variables involved, such as writing skills, to know whether your
PS will turn out good. The only way to know if this is a good topic for your personal statement is to hammer out a few drafts and see how you like them. I think the results of these drafts will provide you with a decent answer of whether or not this will make a good topic for your PS.