Amara has a kid that is as powerful as Chuck. But Chuck wants to get rid of the kid. So Chuck sends Castiel to kill him but instead Cas gives the kid to John and Mary Winchester after they tried for a second kid. The kid is now known as Sam Winchester, Sam was born with the mark of Cain. In this Amara is trying to get to her son . The reason why Sam hates being called Sammy is because he remembers Amara calling him that. I don't one supernatural but this is my own version of season 11.