Sentence:  Even before she could jokingly warn Mr. I Don't Nap not to <WSD>sleep-fuck</WSD> her again, he'd fallen asleep. / She didn't mind aggressive sex, but she suspected Ronin hadn't been conscious of his actions. "What? He was <WSD>sleep-fucking</WSD> you?" That did sound ridiculous. 
Meaning of the word marked with <WSD> tags:  (rare) To have (sex) (with someone) in one's (sleep); to have sex while (asleep).