Even if I knew the exact answer to your faux inquiry (which I don't), you wouldn't take it seriously anyway.
All I know is that there is a person inside that frail body. And it is not up to a judge to say that life can be snuffed out.
I think the soul enters the body at conception, so I guess that would mean that the soul leaves when the physical body is dead. There are three things that determine death. Heartbeat, brain waves and respiration. I think those are the three criteria. Terri has all three in her favor yet, but still they starve and dehydrate her to death. I believe her soul is still with her.