She looks like a Quarter Horse paint. She has the bloodlines of the quarter horse combined with the paint. Since paints have Arab, Quarter Horse, Thoughbred, ect bloodlines it looks like that is what she would be.
Shaneequah, 1998 gaited Bashkir CurlyxArab mare
Johnny Cash, 2001 Arab x pony gelding
Brighty, 2013 Standard Donkey jack