If they are brain dead, yes it is possible that they can respirate on their own.
I too was faced with the prospect of relatives being kept alive.
It is a horrible choice. Each of us has to make the best decision at the time. We need to take into consideration the prospect of recovery and the wishes of the patient. We need to take into consideration the opinions of our doctors and spiritual advisors.
I believe these people made the wrong decision. Take off the ventilator and heart machine and this girl’s body stops working.
God has the girl in his hands. I pray for peace for the family.
I pray for this family to find peace as well.
They need to let her go from their minds, because she’s already gone from the shell they’re keeping alive.