Wendy hummed softly as she sat on her couch, the 20-year-old reading a novel, having finished cleaning her house that day, and was trying to find something to do to kill her boredom, while waiting for her next modeling gig.
Sighing softly as she put the book down, Wendy stretched her arms up into the air above her head, letting her tank top ride over her chest, jiggling from the movement, and partially exposing her nipples, before looking down at her massive pregnant belly laying on top of her lap, feeling both Dipper and Mable, shifting around inside her womb, getting cozy in their fleshy maternal home, while causing the taut dome of flesh to visibly distort as her belly gurgled with the sounds of sloshing amniotic fluids.
Rather than letting the Pines Twins return home that last day of summer ended after Weirdmagedon, Wendy couldn’t stand the thought of saying goodbye, and had chosen to Unbirth both Dipper and Mable, keeping them safe inside her womb, and has done so ever since as the years passed. They’d tried fighting it at first, but they eventually came to accept their new home, and even began enjoying it.
When she first unbirthed them, her belly was absolutely massive, literally making her look impossibly pregnant with a dozen full term babies. But after about two years, her belly compacted down, tightening its hold on Dipper and Mable, to the size of a slightly overinflated beach ball, its reduced size making it easier for her to move around and less likely to bump into and break stuff.
Her body had gone through some rather extreme changes after unbirthing the Pines twins curled up inside her womb, and having kept them there the last four years. Her breasts were taut and pressed firmly inside the tube top she wore, with small tears on the side of it, and her hips had grown a fair bit wider than they were before unbirthing Dipper and Mable, her thighs were thicker, while still retaining a slim athletic build overall.
“Now Dipper, Mable, you behave in there. You’re inside my womb for a reason, and won’t be coming out until I say so when I’m ready to say goodbye to you...” Wendy said smacking the side of her belly, making it and her breasts jiggle from the motion. “You’ve both done so well with accepting your new home inside my belly these last four years. But as I said that day I took you both in, consider yourselves on ‘Womb Arrest’ until further notice!”
Wendy loved being pregnant, and not wanting to have any kids of her own just yet still, decided that keeping Dipper and Mable inside her womb, even if it isn’t the womb that grew them, was the best option, and had practiced it regularly since she was old enough to even conceive children, and started out by unbirthing her friends, and then moved on to Dipper and Mable as her belly pets, keeping the twins inside her the longest she’d ever unbirthed anyone. She even did the same with animals she felt needed love, and comfort, and wanted to keep hidden from her Dad and brothers when she still lived with them, but now was living completely independent on her own, thanks to her careers as a Vorarephilia Maternity Model.
Doing this fulfilled her desire to be pregnant and was a rather effective method of keeping both Dipper and Mable Pines safe from the harms of the outside world. She certainly wasn’t gonna complain about the boosted perks these pseudo pregnancies gave by boosting the curves of her body, keeping her sex life very active and interesting with many of the boys who found her attractive with her MILF-like body, and she was quite happy and content with the life she now lead with the Pines twins safely contained inside her womb.