Well, if they'd done nothing they would have been trashed, as they are being trashed for not being able to control all the evil in the world.
I don't know what will happen, but despair is not the answer. You pray and maintain Faith. If she dies, you work to change the Culture of Death that allowed this to happen. You make good come out of evil.
Or you attempt to accept that God's will is being done, and use your faith in His will from which to draw comfort.
None of us know if God isn't using poor Terri, for some greater plan. We all know what OUR will is however, and it with that, that I struggle.