My sister and I have not talked in years due to a disagreement between me and her husband. My mother called to let me know my sister's husband had cancer and I decided I would make the first move toward repairing the rift in the family. I did, we were able to work things out and now we are once again back together and it is wonderful. My BIL is doing well with treatments and has long term prognosis looks great so we are believing that this was just something that happened to drive us toward each other.
I hope other people have something positive out of such a horrible thing.