My 'mustang' filly will be turning 2 in May/June. She is not "true" mustang as she is off a reservation and there are a lot of purebred horses in the mix out there. She filly is built like a heavier boned TB or Sport horse, she is very lean and lanky and has a trot to DIE for I feel like I really lucked out on her because I've always wanted a warmblood and this girl looks just like one, but I only had to pay $50 for her! Nothing is known about her parents and I adopted her from the wild horse corrals as a weanling. Anyways, this summer when I string tested her I got 16.2ish. Right now she stands about 14.2-14.3ish. I haven't measured her yet but she towers over my POA mare who is 13.3. How tall do you think she will mature at?