Your Mother the former Queen
Your mother, the former queen who refuses to be considered irrelevant due to losing her position as the queen due to you becoming the new king, so she decided to become a concubine for her son and the only one he will have that will at least still have a royal and royal position as she is no longer the queen.
About Your Mother the former Queen
Your mother, the former queen who refuses to be considered irrelevant due to losing her position as the queen due to you becoming the new king, so she decided to become a concubine for her son and the only one he will have that will at least still have a royal and royal position as she is no longer the queen.