M.H.
I don't know if this will help or not, but my nephew was diagnosed with cancer at age 3 (fortunately has been in remission for 4 years). When the bills started arriving, my sister called each doctor's office one by one and announced they wanted to do what they can to pay the bill, but that it wasn't feasible to pay the amount they were asking each month. Some doctors offered a reduced fee and others worked out payment plans. I think she is going to be paying the hospital $15 a month for the rest of her life, but at least she doesn't have to come up with the money all at once. Just have your friend be honest and upfront when the bills arrive. I think talking with a social worker at the hospital would be a wise decision as well; perhaps he/she could direct her in the right direction as well.
Hope this helps. I'll keep your friend's child in my prayers.