I don't know, but have no reason to believe she is.
The reports I have read indicate no physical condition that would cause pain.
She is said to flinch away from discomfort, so she is able to react to pain and that doesn't seem to be happening.
The man's family says "no". It should be left to that. If he has a Will, fine, then the rest is irrelevant.
Actually, she is being starved right now, and that does cause pain. I know, I was starved for 4 days once for medical reasons. Horrible.