Many people are really afraid of cancer. They are afraid of being sick, they are afraid of death. They are uncomfortable around the subject. Unfortunately that makes them act uncomfortable about you. Single handedly, you probably can’t change that, it takes a massive change to how most live. Looking ‘well’ makes it easier for people to skip over the details. Looking ‘unwell’, drives it home and increases the discomfort factor. You deserve special consideration but in reality you may have to make allowances for others. Your sister is trying - just let her know you want to hear about her life, just as you normally do. But most of all, you are not defined by the shortcomings of others. Cancer’s a funny sort of lens, it can distort life but it can also make some things clearer. Keep your own well being and your better future, not the limitations of others, upmost in your mind. Best wishes.