So that’s what that doll was!
My mom or her sister’s had that doll, and we used to play with her all the time at grandma’s house. She was in rough shape - the top of her head had been hot glued back on after a cousin ripped it off, and her hips had a metal wire running through them to hold the legs on after the same…

I’ve found Arda Wigs to be a great resource. Mind you, I only wear wigs for cosplay, but they seem to be high quality. : )