I personally will avoid using tpe real sex doll padding. Don’t get me wrong, because it’s a convenient thing, and I’ve used it successfully before, but I think it’s best for areas that don’t stretch often. It also actively melts the surrounding tpe, so some skills are required to successfully use it. The solution I have to solve is to place her in the best position so that her armpits are facing up and then close her arms as much as possible.
However, it was still allowed to enter the axilla and gradually divided into small pieces using a variable welding station. You can always cut some pieces from the neck and that’s what I do when I do a groin repair. No matter what you decide, I wish you good luck! Soldering station is a good solution. Depending on the factors, the hot air gun will open her more / worse things, but I will first cut a small piece of TPE and then gradually fill it into the larger TPE by welding.
Yours can be repaired, but it will take up a lot of spare TPE real sex dolls, I will take it from the insert or her neck, or just order some spares. I’ll do the repairs like a few days, so you should take your time-do it every time, then take a break and continue. The final mixing will be performed using a solder gun.