Sarah lifts Paula up towards her face. As she does, she turns to you and says, "This is the only way, James. I know you've been having sex with her these last few years, and we can't let her stop our love anymore."
You shuddered half if horror and half in excitement. When you were young, Sarah had taken advantage of you and molested you. To her, that meant you two were in love. For you, you had been too young to make any sense of how you felt. Every now and then, you had continued to have sex with Sarah, and it had become more consensual as you got older. However, two years ago your mother had come onto you one drunken night, and you'd regularly been having sex with her since. Apparently, that had made Sarah terribly jealous. Violently jealous.
Without saying another word, Sarah opened her mouth and slid your mother's head inside it. At six inches, you mother was still pretty big, but you knew from personal experience that Sarah was very skilled at deepthroating. With no gag reflex to stand in her way, Sarah immediately began gulping and dragging your mother further down. While you had seen your mother and a few of her friends (particularly Mary) get deep, often sexual, pleasure out of devouring the people you shrunk, you never got any hint that Sarah would also enjoy it. But as she swallowed Paula, her nipples grew erect, and she shuddered with subtle orgasms, which you had some to recognize after your years as a near next slave for the women of the neighborhood.
Your mother cursed up a storm as she sank deeper into Sarah. Meanwhile, Sarah moaned as her slimy tongue slithered out to taste and caress your mother's plump breasts and beer gut. You knew this should be a horrible experience - you loved your mother, after all, even if she did sexually abuse you - but something about how Sarah was swallowing her was so...erotic. You could feel yourself getting hard as you watched.
Once your mother's waist slid past Sarah's lips, she stuck her tongue between Paula's legs, forcing them apart. Then Sarah proceeded to swish her tongue back and forth across your mother's fat ass, smearing it with saliva. You feel a twinge of sadness as you watch that meaty butt slide into Sarah's mouth. As weird as your relationship was with your mother, you did love spreading those big cheeks and fucking her (one way or another) from behind. It was an odd thing to be sad about, but the feeling hit you all the same.
Sarah had no problem slurping up your mother's fat thighs as her rhythmic, practiced gulps dragged her deeper and deeper. Sarah's lips sealed over your mother's feet, and Paula was forever separated from the outside world. Never breaking eye contact with you, Sarah made a show of swallowing one last time. You watched, enraptured, as a long, meaty lump slithered down Sarah's throat until it landed as a meaty lump inside her chubby belly. It immediately began to thrash violently, and you swore you could faintly hear yelling and cursing emanating from within.
Sarah slowly opened her mouth and stuck out her tongue as your eyes met hers again. She moved her tongue back and forth, almost like a tail wagging proudly. You could tell Sarah was indeed proud of herself, and she was showing you her empty mouth where your mother once was. It was sexy. Inviting, even.
"She's all gone James," Sarah said as she contentedly rubbed her wriggling stomach. "It's just us now. No more interruptions." Her eyes traveled down your body to the bulge in your pants. "Why don't we celebrate?"
Sarah sauntered over to you as you watched in a daze. She ran her hand over your hard cock, feeling it through the fabric, before popping the button on your pants open. As she unzipped your fly, she sank to her knees, but leaned back for a moment and rolled up her shirt, giving you clear view of her cleavage and the moving morsel that was your mother.
"As you've seen James, I love to swallow," she giggled. "And I don't blame your mother for going after a sexy boy like you. We could even give her a parting gift, you know." She winked at you. "I hear that little slut loves eating cum. Why don't we let her do exactly that, while my stomach eats her?"
With that, Sarah leaned forward towards your now-exposed cocks.