1. I anticipated the same problem- and sure enough- having to stand her with feet apart for good stability caused the axes of her weight to flop her feet outwards and the shoes would pop off. Very scary with TPE. So, while I had her laying down, I put the shoes on her, pressed upward under her heels, and drilled holes about a quarter-inch deep into the dimples in the sole left behind by her heel bolts. Then I stood her up barefoot (in her socks) and lifted her by putting my shoulder under her crotch, setting each foot in the shoes while ensuring that the heel bolt was stuck in the shallow hole. This method has worked well so far and prevents her feet from pressing downward into the toe, which would damage and deform the toes and arches.
2. Never store the doll in heels, you will damage her! And keep an eye out for cheap dark-colored shoes, they are notorious for bleeding dark color and staining the doll. Always have one-third point of contact to keep the doll balanced, unless you are an expert like some high heel pioneers on the forum.
3. Sex dolls are not real people who have a cerebellum to maintain body balance. The three metal bolt heads at the bottom just play a supporting role, which is not particularly stable. So you need to find a wall or something else that the doll can rely on to keep the doll standing. This operation may take some time and you need to constantly adjust the posture to find the best balance.
It is better for the doll to stand barefoot on the ground and put a soft cloth on the sole of the foot. When wearing shoes for the doll, wear a few more socks or use a hard insole to prevent the shoes from being damaged. You can also put leather insoles on the feet of the doll first, and then put on stockings. Click here to learn how to use the standing function correctly: https://www.rosemarydoll.com/standing-feet-option-for-sex-dolls/