I read a novel a while back , that talks about the female lead that was reborn after she had lived her past life , in her past life her boyfriend left her for her step sister who was using her to read from her mother's old book that has ancient recipes of medicine, and after that she was reborn she decided to save the male leads father and marry him , in one one scene she actually travels to other country to save him from falling off the cliff by hitting his car with hers and then she asks him to marry her .
not a female lead but a male MC. Scum gong got together with MC's stepbrother. ML is scum gong's father. https://www.novelupdates.com/series/second-marriage-of-a-wealthy-old-man/