Well Legacy, Im guessing that her laying on the wounds would stop the blood from rushing out of her body. Just like when humans get hurt we put something on it ,like a bandaid, to stop the bleeding. But if the arrow went through her then there would be an entrance and and exit hole, meaning that she still would bleed through one of the holes. Even if she did stop the bleeding there still was a hole in both of her lungs, meaning that most of the air she breathed in went right into her lungs and then through the holes, meaning she coudnt exhale. Im not real sure why she lived for so long. I havent heard of this before. She must have been a very strong doe.