Karen let out a sharp yelp as she felt the slap to her back, then felt her ass being lifted even higher, her feet almost being lifted off the base of the bathtub, the angle starting to slow the flow of cum out of her pussy, though Karen's belly had at least returned to its flat state having pumped out most of Clare's cum. It wasn't going to stay that way though sadly. Karen whimpered as she felt the head of Clare's cock pressing against her pussy....or at least she assumed it was Clare's cock...it could just have easily been a fist from the size of it. Then it started pushing inside of her, Karen's eyes going wide and her mouth opening as if to scream, but no sound came out. The intense mixture of inhuman pleasure and pain was overwhelming Karen's mind, leaving her unable to process it for a few moments. It wasn't until Clare's cock had fully entered her, now sitting in her womb and creating a cock shaped bulge in her stomach, that Karen was able to let out a scream that would likely be heard echoing even outside the house. Then finally it was all inside, Karen panting heavily in a desperate attempt to get used to the sensation, though before she could she felt Clare starting to pull out, slowly and forcefully, before ramming back inside, Karen screaming once again.
"N-not so rough! Y-you're going to break me!!!" The thrusting was far harder than any human on Karen's world would be capable of, harder than Karen's body should be capable of withstanding, yet somehow her body seemed to be handling it, if only just. "NNGH! NNGH!" Karen's entire body shook with Clare's thrusting, feeling her belly being stretched out over and over, her eyes rolling into the back of her head as she was overwhelmed with pleasure from the almost unnatural fucking she was receiving. It took only a few thrusts, maybe 5 or 6, before Karen's pussy started to tighten again, even moreso than before, the girl beginning to howl in orgasm whether she wanted it or not, her body now practically crushing Clare's swollen cock, juices spraying from her pussy all over Clare's mid-section.