Stage of the relationship: One night stand/casual sex situations.
Yes, earlier we said she hates when you overstay your welcome, but life is unfair and double-standards run amok, so if she wants to sleepover after sex, you damn well better oblige her. Call it chivalry if you want to.
Don't finish and then launch into a laundry list of your to-dos for the next way as a subtle way of asking her to beat it. She's not going to require breakfast or stick around until 1 p.m.—if she does, feel free to show her the door—but let her fall asleep if she wants to. Please, be a gentleman, even if only for an eight-hour window of time.