One thing that might be of interest is a thread of actual historical material on rapes in history, like the tit bits in Daniel Defoe¨s "A General History of the Pyrates"
https://gutenberg.org/ebooks/40580 on the pirate Blackbeard/Edward Teach
".Before he sailed upon his Adventures, he marry’d a young Creature of about sixteen Years of Age, the Governor performing the Ceremony. As it is a Custom to marry here by a Priest, so it is there by a Magistrate; and this, I have been informed, made Teach’s fourteenth Wife, whereof, about a dozen might be still living. His Behaviour in this State, was something extraordinary; for, while his Sloop lay in Okerecock Inlet, and he ashore at a Plantation, where his Wife lived, with whom after he had lain all Night, it was his Custom to invite five or six of his brutal Companions to come ashore, and he would force her to prostitute her self to them all, one after another, before his Face
. ..... He often diverted himself with going ashore among the Planters, where he revelled Night and Day: By these he was well received, but whether out of Love or Fear, I cannot say; sometimes he used them courteously enough, and made them Presents of Rum and Sugar, in Recompence of what he took from them; but, as for Liberties (which ’tis said) he and his Companions often took with the Wives and Daughters of the Planters, I cannot take upon me to say, whether he paid them ad Valorem, or no. At other Times he carried it in a lordly Manner towards them, and would lay some of them under Contribution; nay, he often proceeded to bully the Governor, not, that I can discover the least Cause of Quarrel betwixt them, but it seemed only to be done, to shew he dared do it"
Likewise links to other online resources of interest, like
https://www.thecollector.com/sexual-assault-of-women-in-ancient-rome/