Olivia knew that she had lost, mentally she didn't want to give up but the Salve had give it's verdict. Eric had won, this new race would be allowed to survive and Olivia would contribute to it. There was an alien element to the Salve that edited their DNA and made them transform body shapes and sizes like CG effects in a high budget horror film.
A flap of skin below Olivia's wrist opened up and a translucent tentacle wrapped itself around Eric's hand and Olivia's before binding them to the steel post, two other tentacles burst from Olivia's nipples binding Eric's body to hers. As he entered her she screamed "No, NO!" but she had lost. Eric's penis elongated into a tentacle entering not just into her vagina but into her womb.
It started to pump, not a squirt or a splat but a flood of his seed as if he were pumping venom into her. The other girls were still human, mixed with canine. Olivia had asked for the full power of the Salve and that meant the ability to kill Eric and the ability to be his bitch.
Within seconds her toned stomach started to bulge with the seed or the Beast's baby. Reaching the size of a small melon, her breasts grew big as they ballooned with milk for their unborn young. Swelling with life and fluid it pushed Eric off of her. As she grew to the size of a woman pregnant with twins at 8 or nine months, her breasts sagging under the weight of the milk.
She cupped one breast with one hand, the elbow cupped the other nipple. She covered her pubic mound with her hand.