When she turned 15, she began to emerge from her vegetative state, and even started to regain some of her motor functions.
As her recovery progressed, she began to relearn how to walk -- a skill she didn't even begin to develop until a year and a half ago, after spending a decade in a wheelchair. Even now, she still can't feel her legs.
"I think this is a really big statement to myself, as well as to the people who wrote me off, that I'm here! I lived! And I'm ready to dance," Arlen said.