"AIIIIIIIIAAAAAIIIIAEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!"""
Jenny can feel the Swampsac searching around in her guts, ripping and tearing at them in search of her most juicy offal. Yards of her intestinal tract are unspooled and sucked up into the insatiable tentacle. It proceeds to burrow towards the centre of the bright young girl's being, wrapping around the fist sized ruby of her regularly thumping heart. A sensation like somebody stepping on her chest overwhelms poor Jenny, it crushes her soul, and she is unable to breathe through the pain, as the thrashing tentacle tries to wrest the organ from its place.. Her left arm goes numb, and her hollowed eyes widen like saucers in horror.
"Mmmmmmmmmffffffffff... Mmmmmmmmffffff... mfffffffffffff..... Mmooooooooooooooohhhhhhhhhhhhh!" she moans as her aorta is severed and her heart is slurped up through her empty abdominal cavity, where it quickly reaches her tightened pink rectum. The overlarge offal is too large for Jenny's tiny round opening, so the Swampsac sucks as hard as it is able to, stretching her ass to an unnatural gape. Overstretched, her anus tears wide and vermilion blood issues forth in gushes. A large bulge pushes up the fleshy pink tube in her behind. It throbs regularly as it passes up the tube into the acid reservoirs at the base of the monster, even disconnected from her body. It will take a short while for it to stop fibrillating and melt into nothingness.
The heartless Jenny discontinues her wailing and struggling, and quietly strains all of the muscles in her body at once, arcing her back and curling her toes.
"Uuuuuuuuuuuuuuuuuuuuuuuuuuughghhhhhhhh.!!!!" the bubblegum haired girl finally rattles out her last breath, spasms once, and expires. Her tensed body relaxes and falls deeper into the belly of the beast, coming to rest at an unnatural angle in the thin coating of acid, blood and urine at the bottom of the digestion sac.

It's a humiliating ending, pissing and crapping herself, then dying by having her heart sucked out of her anus.