Again, this is the type of question that seems sensible to you because you are not a female person, but is utterly ridiculous to those of us who are.
Yes, a small number of female people do commit sexual assaults on other female people. But far more likely, orders of magnitude more likely, is that the person who sexually assaults a female is male.
So while you, a man who has no experience of what it is to be a woman, are theoretically this-ing and how-do-you-know-that-ing and what-if-the-other-ing, thinking up imaginary maybe scenarios, you are talking to a bunch of women who are thinking "well, apart from that time we were students and a bit drunk and my lesbian friend was leaning on me a bit more friendly than usually, I don't think I've ever been groped, or flashed at, or pressurised for sex, or catcalled, or perved at, or had sexist jokes made about me by a woman, not even when I've been entirely naked in a changing room, but I'd lost count of the number of times a man had done it by the time I was 15 years old. So you know what, yeah, I'm pretty comfortable with the small risk that female pose in a way that I am not when it comes to male people."
Think of it as the difference between crossing a small suburban road on foot vs crossing the M1 on foot. Yes, there's a risk in both cases and sometimes the person on the suburban road will be very unlucky, but I know which one I'd rather do day to day.