Lofty is a good word for describing something that's high above the ground, or someone who acts like she's high above everyone else.
Dating from the 15th century, lofty originally meant "exalted," or spiritually high, but soon came to mean physically high as well. A towering mountain can be called "lofty." So can someone who walks around with her nose in the air and speaks in a fake English accent. Even if she's only five-foot-two.