Well, QH, and maybe morgan. But I do see TB in her too.
And just food for thought, when my spanish mustang/curly mix gets riled up, his tail shoots up into the air too. Arches his neck and looks all fancy and gets this fancy prance that gives him some hang time in the air. He doesn't have Arabian in him, maybe way, way, way, way, way back but certainly not within the first 5 generations.