Well, actually they're trying to wean her off the ventilator now. Basically she breathes so shallowly on her own that as it is she couldn't survive without a machine to do it for her. They have to make her lungs breathe in more oxygen. But the doctors think her lungs have this disease (I don't know the name of it), and its cause is unknown. Some people just get it.
Sometimes it seems like everything is useless. But it's when the whole world seems dark that God shines most brightly. It's when life seems ugly that Christ is seen most beautifully.
"God's efforts are strongest when our efforts are most useless"