OP - I'm very sorry for your loss. I can only say that Delta was very accommodating with me. A few years ago, when my father passed away, they waived any change fees. I started off fine but eventually was a mess on the phone and will always remember the customer service agent being so patient. I provided the hospice name and phone number.

Delta was absolutely fantastic as there were a number of travel plans I changed when my mother's health began to decline. They allowed me to change each one without penalty. I never had to provide any information in those cases.