>>105955006
When combining regional prompting + ControlNet, you need to not just mask the input character, but more like the general area that you want your output character to occupy. It doesn't need to be precise, too, more like a generous general area. Dawn's hair is bigger than your input character so your region's mask should be bigger too.

Also, I didn't look up how the loras you used are supposed to work, but I improved the results by simply using the danbooru tag for those characters, dawn \(pokemon\) and ash ketchum.