OMG, how did I forget Two Gentlemen? Proteus has an attempted rape of Silva onstage, only stopped by the arrival of Valentine. (Who promptly forgives him in the name of friendship and then says he can have the girl anyway!)

Surely that rates as nearly on par with Lavinia and Lucrece's fates, especially as this happens in view of the audience?

I wonder if there's ever been a directorial choice to have Lavinia's rape happen onstage. I think it's unnecessary, as what comes immediately before and after is so horrible it would be overkill.