Why is she sucking dick at 3am? That she's using her hand more than her mouth means she wants to get it over with ASAP. That let's me know that whatever the time is this wasn't her idea and doesn't really want to be doing it.
Hahaa reminds me of an old GF of mine,one night I woke up and she was sucking my cock,and was acting kind of pissed off,I think I must have had a boner and maybe she thought I was dreaming about someone else