I telly hate myself for even thinking this and I hope you guys as well but here I go... She met him when he was 8 and she has been his mintor ever since, when he reched the age of 12 that's when she dies (tern into a statue) for 20 year has already passed now the boy is 30+ so ting and she is 24 (she did say she is into older guys~)
Now she's dealing with the fact that her little boy she reased is a man now in a matter of seconds and w the knowledge that he lust for her sense forever
Bad Ending for the MCs
Everyone has pontential of being a Yandere though,
The Yandere Magician Can Only Love The Statue Maiden