Denial

My dad is not feeling so well. I'm in denial. He has never been unhealthy. But he is in the hospital and undergoing a battery of tests. I'm sure (I think) that a pacemaker will make him fine again. My mom is scared & very worried. She doesn't know what to do next. Tomorrow we will know more. In my mind, they are no different than they were 35 years ago when I got married & moved out of their house. I'm only a couple of blocks down the street and I can keep an eye on them from here. They seem the same as ever to me. How could this happen? I can't accept it.