I would recommend contacting local boutiques that specialize in "hair systems" for women generally. What often happens (and I will be going this route as well) is that women with severe hair loss (including transgender women) start out with wigs but then graduate to integrated, bonded hair "systems". These systems are medically glued to your scalp and then woven in with any existing hair and they look fabulous. They are worn for up to several weeks at a time, cannot be pulled off any easier than normal hair can be pulled out, and the woman can exercise, swim, shower, all of it with her hair system and no one will ever know except her and her hair dresser.
Many natal females also suffer massive hair loss that never grows back due to various cancer treatments, so both transgender women with hair loss and cisgender women with medical hair loss use such boutiques.