(Altho disputable because of brain recovery potential in young patients, I'm sure you'll say she's been determined by caretakers to have no foreseeable future as a functional being, independent of extraordinary life support...?)
Yes. Declared dead. They will be turning off the machines in 10 minutes, in fifteen minutes it will be too late for your baby.
Come on! You've already slept on it and had a day to think about it!
Do you let nature take it's course, is it God's will your baby dies too?