Responses
Back when dowun forms the contract with FL, he said that he sees potential in her, not her sister so there's no way he gonna marry the sister. Besides, if he marries the sister, she will definitely kill the FL and I don't think FL would just let her take her power away. So maybe the ending wont be that simple like u said. Probably gonna be lots of drama, deaths, sacrifices.
Well I hope that at least one of those deaths is gonna include her sister and that goddamn father ヾ(❀╹◡╹)ﾉ~
I feel like in the end she will leave the palace together with Baek and even though Dowun won't want her to, he will let her go and marry the other princess since he'll know that she'll never be happy by his side aka in the palace.
All she ever wanted was to be loved and cherished. It was Dowun's/the Yang chan's dream to rise in power and status. She only went along with it bc she thought that would get her closer to Dowun and maybe win over his affection.