I am truly sorry to hear your dilemma, but family is family and as you say they are your blood and they should never be separated from their siblings or blood relatives. I had the same situation with my daughter whilst I was having chemo, she had a tumor on her thyroid and they said it contained cancer cells we were all very scared and my grandson was 12months old. She made a will stating that her dad and I were to become the legal guardians of her son and we were to raise him in the event of her death, I was gravely ill and not knowing what my fate was to be I just couldn't imagine having to raise a 12 month old child, it wasn't just my age but my health and the prospect that I to may die that worried me. But I made her that promise and I would have stuck by it, I could not or would not let anyone else raise that baby he had my blood running through his veins and if I had to get outside help to help raise him then I would have done, infact I would have done anything to avoid him being raised by some stranger. Has it happened the tumor was removed with half her thyroid, I couldn't go and visit her in hospital because I had no immune system it was a tough few weeks but she recovered and I'm sure that's what will happen with your daughter. I feel for your family deeply and I hope with all my heart that things work out for you, I had a physical pain in my heart when I went through it, but it made me stronger to fight for my own life so I didn't let my grandson down and I know you won't let your grandchild down either, you will do what needs to be done and you will keep your family together and they will be all the better for it. Good luck my friend my thoughts and prayers are with you. xx