>>281142188
She's a Devil, so her way of "caring" about someone is all sorts of fucked up. If she didn't care in a way, Asa would already be dead and gone, since Asa's gotten in her way more than enough times to piss her off.
Yoru just sees her as an immature kid who makes a big deal out of nothing, because to her, blowing up a bunch of people is nothing.
She also excused herself for the sex acts by telling Asa that they both liked it and that she loves Denji anyway, so what's the big deal?
In her mind she hasn't done anything wrong, and probably feels like Asa is indebted to her. That's just how Devils' minds work.