>>65416
This is great!
Last night I was just imagining what a scenario like this would be like.
Any time Tanya graces her lips with a sweet or anything sugary it goes directly to her hips and ass, and stubbornly stays there forever. A moment on the lips forever on the hips and all that.
While she still lives at the orphanage her growth would be modest, her hips widened just a tad and a bit of softness on her butt even while her ribs are visible. She probably wouldn't make the connection at this point with how infrequently she'd actually have access to any sort of candy or chocolate.
Her enlistment however would give her more opportunities to indulge, by the time of the Norden incident she'd have a proper pear shape and a nice bouncy rear. At this point it's possibly she would figure it out, but she'd probably have other things on her mind.
But she'd definitely know by the time of her taking those propaganda pictures, indulging in cake beforehand out of a mixture of despair and taking the opportunity for sweets. Her cute butt steadily growing with each shot as the cake digests, Tanya despairing as she realizes midway through what's happening but forcing herself to pretend nothing is wrong even as her panties grow tighter and tighter on her frame, slowly ripping and growing holes as it practically transforms into a thong, digging between her cheeks and giving her a ridiculous camel toe. By the end of the shoot, right as she feels like she's barely gotten away with it, her panties would loudly burst into shreds, sending her into a deep despair as she either runs, more like waddles out, her bubble butt vigorously clapping behind her. Either that, or she's convinced to stay for a few more 'risque' shots for the troops, maybe even forced to show off her fat ass as she dies inside from embarrassment.
She'd do her best to avoid sweets for a while, but her sweet tooth would inevitably lead her to indulge from time to time, going up pant size after pant size in officer school despite her best efforts. Serving on the Rhine front would probably have her size plateau for a time however, outside of any chance she's able to visit the rear that is. But by that point the damage would already be done, her ass and thighs record breaking in size as she does anything she's able to deemphasize their size such as illusion spells.
Visha would probably become infatuated with her commanding officer probably pretty quickly, entranced by the plush lolis curves and softness. I don't imagine however it would really be carnal in nature, more a somewhat innocent desire to use her expansive thighs and soft, door trapping ass as pillows. When she figures out what causes her growth she'd likely get obsessed with making Tanya even softer, doing her best to subtly encourage her by either leaving sweets around when she's able, putting sugar in her coffee, and other things of that nature.
Inevitably Visha's indirect feederism would ruin Tanya's efforts, leading to occassions of her pants ripping in the middle of combat, exposing her to the world, or growing out of whatever panties she has and leaving her in despair as she's forced to go out without any underwear, hoping no one notices.
After the eastern front starts and Tanya is able to get her position in the rear it's likely she'd absolutely balloon from a combination of easy access to sweets, Visha's efforts, and a realization of the inevitability of her growth as each attempt to diet only causes her already flat stomach to grow concave and expose her ribs again. She wouldn't be just ripping her pants anymore, like in the pic you so graciously made she'd be exploding out of them.
Perhaps as puberty hits her, her emotions would change from embarrassment and despair to getting off to her growth and having to constantly get new clothes, maybe she'd realize what Visha has been doing and discovering she enjoys being a bit of a feedee, rationalizing her not getting rid of Visha as not wanting to waste her talents.
By letting herself enjoy her growth instead of denying it she'd probably finally start developing a soft pot belly as she indulges. Ironically all of this growth would probably convince high command that she'd likely no longer be combat effective and despite her 'protests' would keep her in a permanent position in the rear and on her own rear, getting exactly what she wanted all along.
Alright I may have rambled a bit but hey, we're all here for fetish scenarios anyways.