The guy tortured at the very start
This is perhaps what's confused me the most. Remember the guy I'm talking about, who had a cast made over his head, and was forced to drink something thru a funnel & tube? Well the whole story establishes this killer as doing this same thing with a long string of WOMEN, so who was the guy supposed to be that's getting killed?
And yes, on the other note, it's utterly laughable that she'd of been even remotely in the mood to have sex there. Even if you are sort of making a connection with your "fellow prisoner", that was just ridiculous.