To be fair to her, to look at my and my close friend side by side you'd think we were both the same size. I wear a 10 mostly, the odd 12 in places like primark who's sizing is tit, and she wears mostly 12s and some 14s. There is also only 3lbs in weight between us and only 2 inches in height.
As much as I don't think carys is open about being a size 12 due to her leg muscles and her breasts, I don't think it's fair for everyone to compare her body to their size 12 body. She might just wear a 12 and squeeze herself in? Who knows.
Regardless of her size, I do really think she is in a mentally bad place and should just knock off and get some help for a little while.