My cousin was recently put on a feeding tube, what do you think the outlook is?

My cousin has Cystic Fibrosis and is 29 years old. Last year she received a lung transplant and the outlook was quite positive, however her body has been rejecting the new organs and she’s lost a lot of weight (Appearing very unhealthy). Unfortunatly now she’s on oxygen, and it is difficult even for her to walk up a flight of stairs. I was told if she was to get another transplant this would fix all of that, but because she’s lost all this weight her doctors decided to put her on a feeding tube. I know this sounds stupid but is this good or bad? Should I be expecting something to happen soon :\ ?

I’m very worried and scared for her but I really don’t know what to think about all of it.