Megan watched as the green mist enveloped the girls in front of her, turning them into glistening scarlet gore piles of melted meat and bone. The anger she felt about being snuffed to feed the sexual proclivities of an alien species was dwarfed by the freezing cold fear she felt at the prospect of being melted alive. The green cloud lingered at her feet, the vapors stinging them horribly, like putting her toes in a bucket of nettles. It was like stepping on electricity and fire at the same time.

The fear paralyzed her. There was nowhere she could run, or hide… so she just froze in place, as the pain crept up her reddening legs. There was a tinkling sound, and for a second, Megan was afraid she was bleeding from her crotch, but when she looked down, she realized that she was just pissing herself like a coward. She wasn’t alone.. Both her daughters were urinating too. How humiliating, she thought morbidly.

Then the gas started to melt Alex’s head off. Her schoolgirl daughter shrieked as the gas ruined her pretty face. Her new ghoulish appearance was the thing of nightmares. Kimberly screamed bloody murder as she too was touched by green fire.
Then the gas started to eat away at Megan. She started screaming and she never stopped.

Megan tensed up like a rock, squeezing out a thick shit as she did so. She tried to grab her daughters and use her body to protect them, but they were slippery and slicked with blood. She looked down at her smoking body to discover blood streaked fat globs where her breasts had previously been. Her daughters strained and farted as they crapped themselves like their mummy. She wanted to tuck herself into a fetal position and protect herself from the agony, but her muscles were saturated with acid, and wouldn’t respond right. Her legs just pulled back into a squat, and her front remained exposed to the gas. Nor could she cease defecating. The pile of poo and wee underneath her continued to enlarge until melted flesh poured down to cover it.

She fell towards her eldest daughter and managed to pull Kimberly into a shaky hug. The brunette wrapped herself around her mother like a security blanket. Her hips thrust her bleeding pussy lips hard into Megan’s abdomen, humping her mom like a rabbit in heat. Neither of them could see each other well, because they’d been blinded by the potent acid gas. Alex blindly made her way over to the two of them, trailing a line of her own internal organs behind her. She came to rest on Megan's shoulder, already at her limit.

Her Kimi was shaking crazily, her jelly tits running down her exposed ribcage. She’d ground her pussy against Megan until it had fully melted off her, bringing with it the pink, wet mess of her innards. Pop went Megan’s own ravaged belly, and the guts of mother and daughter mingled until they were indistinguishable. Kimberly’s anus shot out of her rectum, carrying a thick pink worm along with it. Her first daughter shrieked, groaned then gurgled as her larynx melted out of her throat.
Kimberly’s neck lost its integrity and stretched obscenely before her skeletal body fell out from under it. Megan lifted her daughter's severed head high in mourning, puking blood as she did so.

Alex spasmed weakly against Megan’s skeletal back and then ceased moving just like her sister. Megan was quite insane with grief and agony. At this point, she was the last girl left alive. Cold alien eyes took in her suffering and gleaned cruel pleasure from her misery. The alien couple had restarted their sexual ministrations seeking to time the ejaculation to the very moment of Megan's death.

Megan clung desperately to life, but in the end all her organs failed, and she passed away just like her daughters. Splurt… the alien male inseminated his female, taking a perverse sexual pride at his conquest of his mate, and the extermination of the vermin that inhabited this world. These were the greatest things in life.