IMO, if you stir up a peasant mob, I don't see too much wrong with the other person doing some impromptu RP with how that mob acts. It is, after all, a peasant mob. Just because you started the mob doesn't mean you control each and every single one of the thousands of peasants in it. The mob getting a little out of control, and committing wanton acts of violence, is a risk you take when dealing with mobs.
If someone RPd that you had actually sent them out to commit rape on purpose, then that might be crossing the line.
As far as I am aware, it was declared an attempted rape. And when you get an angry mob of fanatical peasants trying violently to drag a woman from her home, well it's rather safe to assume it would escalate to sexual violence and her being beaten to death.
