So maybe she is the child of that ruth guy
So the duke is actually the brother who is supposed to be dead. They were twins but since his brother died he took his identity and became the head and is pretending to be the twins dad(the twins dad is the dead brother). Mc' mother and the duke were actually lovers but since the duke decided to use his brothers identity and pretending to be the one who died he couldn't be with her anymore and send her away to protect her from imperial family. But he didn't know she was pregnant. Before dying she send Mc to her grandpa who knew she was his granddaughter that's why he left her everything.
Why do i feel that the disappearance has something to do with this new guy...like his sudden appearance and then now confessing that she was his first love then when was he when she was suffering so much..and dont get me started when the FL says hurtful things to others then feel guilty again nd just with a snap she forgets how she made someone else feel...its so dumb
So i have a little theory of my own...First that chanhyeong is Milan Won's husband's son with other woman...and most likely Milan played some underhanded tricks like li on and got the husband to be with her leaving his lover....but the lover got pregnant and afraid of status of milan, find some man and gave birth to their son and left hence she is missing... As for milan's master piece, i believe both daughters are gonna be her masterpiece, Hera inheriting her true artistic side and Li on inherting her dirty tricks and manipulation...Also milan's husband loves li on more than hera because he never actually loved milan and as hera was not born out of love, so he doesn't love her..only have sympathy towards her due to her poor childhood and being born to a psychopath
Gosh the manhwa is so fast paced!!