He has had several concussions as well as chemo brain. He continually asks where she is and we are afraid to tell him that she is dead because we don't want him to be upset. She actually committed suicide and he is the one that found her. Every time he falls and hits his head, it scrambles his brain a little more. In his mind she was there with him a few minutes ago. What should we tell him? His reality takes him back about 20 years.