Stock breeds can have very short heavy necks. Depends on the type of QH. There is just soo many different types of QH's out there. I honestly don't see any Andalusian in her, personally (cared for a stallion). She looks very typey & elegant in her summer pics, but like a cuddly pony in the winter pics.
Regardless she's very pretty. Her head & neck kind of look similar to my last horse, but she was a paint - lol!