Years ago a friend was in a horrible car wreck and came out mostly paralyzed and with no memory of the last few years. She didn’t remember her college friends and clung to her newly found relgious support group. She was never religious before. Her personality was completely different in numerous ways. She was effectively a different person and we no longer had anything in common. I don’t know what happened to her after that, but I mourned the loss of a friend.