My Husband Died In April From Myelofibrosis And His Children

My husband died in April from Myelofibrosis and his children did not let me talk to any of his doctors. He ran temp. of 105 and they couldn't find any infection after extensive blood work. He didn't complain of any pain, but just seemed to shut down one organ at a time. He took Hydroxerea and then Jacofi until hospitalized. I have always wondered if I did every I could to care for him.