Hehehe! I know, I totally fail at AU. Because this SO DID HAPPEN! JKR is into pervy Blackcest femmeslash bloodplay, doncha know? :D What really struck me about it, after reading that scene and the following chapter, is that Hermione never says what happened to her. If it had just been regular, run of the mill torture, it seems like she'd have said something.
Anyway, lol, thank you!