Pulling a Feeding Tube from a 16-Year-Old?

This is a terribly tragic case: Javona Peters has been diagnosed as being in a persistent vegetative state (a terrible name for a diagnosis, the only one I know of which contains a pejorative, a derivation of the V word). She became unconscious less than three months ago, and so the diagnosis seems rushed to me. In any event, from the story:

The reporter’s hope killing “what’s left of her life” comment aside, imagine the pressure this poor man is under to accede! Javona’s mother, from whom he is estranged, wants the tube pulled. We know that too often medical teams and social workers pressure and cajole for such outcomes. But I would urge all concerned to hearken to the lessons we should learn from the Haleigh Poutre case. (More, here, here, here, and here.) She too was a girl diagnosed as permanently unconscious. The Commonwealth of Massachusetts, through its Department of Public Social Services, sanctioned by the MA Supreme Court had agreed to dehydrating her. But, before the deed could be done, Haleigh awakened—even though the doctors were sure she would never again be aware

My first question is: What’s the rush? The story says the mother wants to sue the hospital, but that doesn’t require Javona’s death. So again, what’s the rush?