I thought you were a time-limited husband

A girl named Han Su-Yeon, a kitchen assistant who works less than minimum wage, suddenly dies in a tragic fire. Han Su-Yeon wakes up, and is reincarnated into Alice Dearhart, a minor character of a novel she read in her past life. As Alice, she is married and put into a family where the stepmom gives her 6 months to kill her son. (AKA her husband). Will Han Su-Yeon kill her husband? How will she use the 6 months? And will she die in the end?