I hate it. Both Byul and Dojin shoukd be on Hye's side. Byul has been visithing her all the time and Dojin has been supporting her for years without Hyesung's knowledge. It's such a betrayal towards Hye.
Her situation is completely different from what Hye did. She knowingly left her (already conscious) child with an abuser, he left Byul with a loving dad and came back 2 months later ... I hate this plot point. I hope we don't see her redemption. Byul and Dojin should be on Hye's side!!!