To live a happy life in a tragedy novel

Professor Marie Anne Walker was a leading a scientist with the task of creating a plant that can grow in any environment due to the after effects of the world war 3 which destroyed most plants in the planet. Unfortunately, she failed. God then propose a deal. "You desire to live in a world free from technology while enjoying the fresh air of nature?" "Yes" "Then, if you can accomplish the mission I will give you I promise you, without a doubt, that you will live a happy life" "I will. Thank you" She then later found out that the world she reincarnated to was the novel she red a long time ago. A tragedy novel where everyone dies at the end. --- P.S. The picture is not mine and is credited to the artist.