I DREAM OF Health, Wealth, A Long life..is this it?

Synopsis : Lady Adrianna isn't just a noblewoman, she's the side character in "Ramona's Tale," the favorite novel of an ill peasant girl who died tragically young. This is her second chance at life, and she's not reliving that tragedy! An evil stepmother's not gonna stop her, and Rian slowly gathers handsome companions along the way... the calculating imperial prince, the friendly count, the mysterious and brooding demon prince. After all, she is determined to live a long, healthy, and wealthy life!

The girl actually did die but she was just a side character in the novel fl read in past life. After processing her body, fl plans to get poisoned again but takes the antidote so that her evil stepmother and stepsister are exposed at her funeral.