"Mm, good.  I'm glad the two of you understand your chances," the succubus said, grinning, as she walked up to Lyla's cell and unlocked it, letting herself in and locking the door again behind her.  "Since you're so submissive already, I won't bother with the ropes.  Just relax, drink this, and we'll be done soon enough," she said as she held out one of the vials.  The liquid inside was a mild aphrodisiac, not enough to make the mage lose her mind to lust, but she would definitely feel unwanted pleasure much more easily after taking it.