From Harper's Weekly:
In Boston a man named Jason Strickland asked a court to recognize him as the father of 11-year-old Haleigh Poutre after Strickland's wife, who was the aunt and legal guardian of Poutre, shot herself and the girl's grandmother in a murder-suicide. If Strickland, who is accused of beating Poutre into a permanent vegetative state, is recognized as the girl's father, he can order that she be kept on life support and thus avoid a murder charge.
The penalty for battery causing serious bodily injury in Massachusetts is 5 years. The statutory penalty for homicide is death, but the state supreme court has invalidated capital punishment.
And, no, I don't expect the state to give Strickland legal authority over Poutre.