Hello friendly, it's nice to meet you.
I am sorry for your friends loss, it must be very hard to watch her go through this. The only advice I have is to make yourself available to your friend to talk but also take care of yourself too. Is your friend religious? Most church leaders offer counseling for these type of things, there also may be some support groups that she could join that may be helpful. Also some therapists work on what is called a sliding scale which basically means that your cost is decided by your income so that also may be something to look into.