She fell in love with another alfa while married to her abusive husband (that is okey, it is completely acceptable).
She lied to her new alfa liver that she didn't have a kid and left Hyesung with his abusive father. She also lied to Hyesung. She gave him a bunny toy and said she will come back, Hyesung waited all this years for her to come back and touch maybe something bad happened to her.
His mother left him when he was abused as a child. Came later on after his marriage at request of dojin but hyesung reject her. Kinda I don't want to know you anymore, go away situation.
Pls remind me what happened between him and his mother again?