We had a young mom (36) with two young children at church pass away this summer after a very short bout with it.
She was doing so good, that they restarted her chemo (and her brother had just been tested and was a match for bone marrow!), and she died while having it. They had originally stopped the chemo, because she wasn't doing good on it. She went home, and although she lost lots of weight, she was doing ok, and was told she was in remission. After she passed, thoughts were made, that she may have been allergic to something in the chemo, since both bad times were while having chemo.
Another friend passed away 3 months after being dx'd several years ago. There is tons of info on the web about it..I was always looking it up this past summer, trying to find some hope.
Edited to add, that Crystal's leuk was not supposed to be the bad kind..in fact at first they thought it was lupus. But as she spiraled down, further testing did reveal the bad kind.