title?

I remember reading a manhwa where og fl got her happy ending with the ml, but ended up hating her kids with him because they took away ml's attention from her. Because this ruined their marriage, she goes back to redo the whole story to restart their relationship (she knows she is the mc of the book and repeats the same actions that are in the story) but there is a new fl, who is the current mc of the manhwa. I don't remember their appearances but I think that og fl had light hair (either blonde or a really pastel/bright color) and mc wasn't in the original novel. Please help T_T