Terri Moans and Grimaces

I'm just amazed. As Terri starves, she moans and grimaces, such that even the nurses notice, and yet she is still said to be in a Persistent Vegetative State, and is still being starved.

Part of the reason they're starving her is because they believe she's in a PVS. The pain she is experiencing proves she's not in a PVS. But they're still starving her. I don't quite see the logic...

"Johnny, eat your peas. There are starving people in Florida who would love to have them."