Changing Family Dynamic (Excessive Size, Mother/Daughter Incest)

I posted my first piece of writing on this forum a few weeks ago as a short-story companion piece for a morph I had done, and I was quite happy about it and (I like to think) it was quite well received. I had another morph I wanted to do from the same picture set, and so decided to do a sequel to the first piece. As I mentioned in my morphs thread, I am apparently incapable of sticking to a word count, since my new story kinda ballooned on me again. Instead of posting this new decently-sized story in my morphs, I'm collecting them both here. I'll also post the morphs here as well, the second one after the story. I hope you'll understand why when you get to it :D. I might even come back to this story and post an epilogue, since I've got a few ideas buzzing about the old noggin for these two yet. Anyway, let's get into it!

Contains: Futa (duh), Excessive Size, Excessive Cum, Mother/Daughter Incest, all good stuff :)

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Emily fumed as she waited outside the bathroom, waiting for her mother to finish her shower. The teen loved her mother, but the older woman was so . . . infuriating! Emily had examined her feelings many times over the last few years, and an undeniable part of her frustration was pure, unadulterated jealousy. Her mother was, at 42, what most boys called a drop-dead gorgeous MILF. She was not too tall, pleasantly curved, with a lovely plump ass, and a rack that contained enough puppy-fat for an entire litter of Rottweilers. It just wasn’t fair, Emily had decided. Despite the promise of genetics, Emily had remained a rake-thin teen throughout her development. She was cursed with a disgustingly efficient metabolism that kept her very slim, with a small, pert little bottom and a flat stomach. More than anything though, Emily desired boobs! She barely reached a B-cup, and almost never needed to wear a bra. While this meant she was able to indulge in lingerie selected for sensual aesthetics rather than crass mechanics, she still wanted big, luscious boobs so much!

Part of her strained relationship with her mother, however, was that as curvaceous and busty as her other was, she would never let her daughter forget it! Apparently born without a sense of shame, her mother was perpetually parading around the house wearing skimpy shorts and almost-transparent tops in summer, and skin-tight pants and figure-hugging sweaters during winter. She was also constantly modelling her new lingerie to her daughter, demonstrating how her H-cup bras were so tight and so beautiful, much to her daughter’s eternal embarrassment. Not only that, but she would constantly ‘forget’ to put on a top around the house, and parade around without a care in the world. Sometimes she even walked around completely nude, letting everything hang out and inadvertently taunting her daughter with her amazing body.

Coming back to the present, Emi