a) sexual assaults by women on other women are as common as those by men on women
b) rape is about sexual attraction
I think you may be misinterpreting me, and also confused about the idea of risk.
Women are definitely more likely be be sexually assaulted by a man than a woman, overall. No one would deny that. But the likelihood of being raped by a trans girl in a tent is, I suspect, lower than of being assaulted by any other girl in a tent, simply because the odds of sharing a tent with a trans rapist are really unimaginably tiny, so likely smaller than of sharing a tent with a girl who may assault.
Granted, being assaulted by a girl wouldn’t get you pregnant, but I can’t quite believe you’re implying that the the major issue with rape is the chance of pregnancy (or that a girl sharing a tent with a penis-owner won’t be able to resist getting herself pregnant, which is the alternative implication there).
As for whether tape is about sexual attraction, of course it’s not, but it is in the vast majority of cases linked- heterosexual rapists typically rape women and homosexual rapists typically rape men. People don’t have to be ‘sexually attractive’ to be at risk of rape, but generally (not always, but in the vast majority of cases) they do need to be of the sex that the rapist is attracted to. Are you claiming that’s just a coincidence?
Otherwise why are we not worried about boys having to share tents with boys? Are they not all at risk?
Bear in mind this is all theoretical, since no girl is being made to share a tent with a trans girl anyway.