M.O.N.E.Y
He is rich now with a powerful family as his in laws. The first thing she does when meeting Dojin is mention his family's status.
Ikr, She did not think about Hyesung when he was small and was living with his shitty father. But when she saw Hyeung is with his "Celebrity" husband, she suddenly remember that she has a son (╬￣皿￣)凸
The sad thing is the shitty father was telling the truth about the mother, when he said she approached him for a divorce but not the son, because had met a new man and didn't want it to affect her new relationship.
If she really believed that Hyesung hated her, why she came back to contact him now?? What made her change "that belief" ??!!