eighth grader has any brain activity, proof to the hospital that doctors should not remove the ventilator. as they wait, the family has also presented the hospital with a court order to stop doctors from removing jahi's life support. >> regardless of the results now, with this in place, they still can't move. this letter is going to buy us time. that's all we've been asking for is time. this letter is going to buy us time. >> an official told cnn the hospital decides if jahi should stay on life support because she technically died on thursday. you see, jahi underwent thursday back on december ninth to help with her sleep apnea. afterward, she hemorrhaged. she suffered a heart attack and became brain dead. her mother says she then pleaded to get a final brain scan. >> they are telling me straight up, the coroner is coming to get her, say your last good-byes. i went in there and cried to this man and said check her brain one more time.