If he pulls, she slides right out. She's covered in slime, a small bulge in her belly, but her divine regalia is not only intact but seems to shed the slime without getting wet or stained.
"So, I think we're... nnngh... done for the day."
She puts a hand on her belly as she gets up on her knees. Coventina doesn't try to stand up.
"The egg is, basically pumping me full of aphrodisiac. And it's proto-core is enough that orgasms fuck up my mana enough for the paralysis to kick in. Need to... get back... before any more worms show up. Or before my mana gets too low and the paralysis starts lasting minutes instead of seconds."
Her legs are trembling, her hands shaking as she holds back from touching herself through sheer willpower.