Has anyone adopted a child related to them who is from overseas?

My auntie is very sick with lung cancer and we are not sure she is going to make it. She has two older children who have left home and one younger daughter who is 14, whose father died of cancer a few years back. We are not entirely sure whether there is family to take the youngest girl in if my auntie dies. Although we are not particularly close with that family being so far apart we have said she would be very welcome in our home and we are serious in saying that. It would be a huge change for her but she would have a stable home for as long as she wanted. Most likely it won't need to happen but I wanted to start looking into this in case it needs to happen. So any advice is very welcome.