The princess of the country dies and is reborn as a mom who is evil and beats her son. The regent in the ancient times who was in love with her also is reborn (albeit, he doesnt remember his past life until at the very end). He is her legal husband and doesnt like her, which leads to her dissatisfaction hence abusing her kid. After she is reborn she tries to get him to divorce her which has the opposite effect (of course 😓)
This has about three adaptations (the ones i counted).
I want to rewatch the first adaptation but for the life of me i don't know the actresses name (she is really pretty) or the male leads. I think it got deleted off of youtube cause i cant find it anymore. The one reason why i liked the first adaptation (i think) is because our fml was really like a princess, she has like an attitude. Holy paragraph