Schiavo 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 PVS, and is still being starved.

The starvation she is experiencing because of the alleged PVS proves she's not in a PVS. But she's still being starved. I don't quite see the logic...

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