The moment when yeojin said i wish yujin was alive instead of hana confirmed everything to me she thinks since hana is a know body it should be her burnden to become a target for eunchong since eunchong dosnet wanna leave his mother
telling an orphan that there your daughter just for a selfish reason to protect your grandson is so despicable and cruel when she find out the truth seyong will be using all her time to prove shes not yujin this will make things worse