When he gets back, Coventina gives him a reassuring smile.
"So, like, this is not a problem yet, to be clear, but it's kind of my thing to notice and intercept certain kinds of patterns before they become problems, right? So. Last night, you fell asleep and left me awake and paralyzed for most of the night. Genuine props for how not agonizingly horny I was the whole time, you did good there, but I was still somewhat agonizingly horny and trapped in my own body for several hours after you fell asleep. Now, I'm cool about that. I'm not easy to phase and a lot of phase-y stuff doesn't bother me in the first place, but, Eph-Why-Eye being that helpless and denied is not my kink."
Pet pet the now-snoozing Sky.
"Tonight, you fell asleep and left Sky here awake and paralyzed and effectively alone with her own, I assume thanks to you much reduced agonizing horniness. Now, again, this isn't a problem because being that helpless is Sky's kink, isn't that right?"
(Sky curls into herself a little but is still subspace-y enough to nod.)
"Right, so, everything's cool. But it could've not. Especially tonight. You really should have waited for me to get back before you went to sleep and left Sky unsupervised. Do not do the equivalent of forgetting to untie the sub after the scene is over. That's kind of a no-no."