All the medical opinions I've heard have been that she's at a point where it won't hurt her. Of course starving would be torture to a fully functional person, but this woman's badly damaged. She doesn't look up and smile at her family, she looks up and smiles at everything. It's just one facial expression in her repetoire, it isn't connected to her thoughts. This isn't me theorizing, this is what actual doctors say.

I know I wouldn't want to "live" like that. I'm making sure to fill out a form that lets them kill me.