Thank you for writing such a sweet and positive piece on such a hard subject. I didn't realize at first what it was talking about, but later on you stated it pretty clearly. And although I would expect the whole story to exude negativity and pity and hopelessness, it didn't. Instead, it is filled with a serenity and a peacefulness that makes the story even more powerful and gives a positive attitude to anyone who may be going through hardships and happens to read it.
I liked the fact that although it talks essentially about cancer, and I want to say that I hope it is not your personal experience, it does not do it in a whining kind of way. It focuses on the reactions and the thoughts about people, and not on the side effects or the other aspects of the illness. Somebody must be very strong to be able to overcome the sad thoughts and focus on the life that is still happening.
Just one confusing point was at the beginning, from " Al, Allison as her parents...a silver lining", where there is just one sentence in third person, while the rest of the story is in first person.
Thank you for sharing. Keep writing.