Does she have a mother? Will other adults be moving in to help her out? Or will she be moving out of the house to go live somewhere else?

How awful!

I would probably give a few gift cards to supermarkets, etc. if I could afford it. And I would try to bring her her favorite meal and something to comfort her...stuffed animal, religious item, maybe a pic of the two of you together to show you'll be there for her thru this.