The Last Gods by Adam Brownlie
Elodie and Markus Black seem like an ordinary couple, but when Markus dies in a tragic accident, their lives take an extraordinary turn. Driven by love and desperation, Elodie hopes that Markus’s groundbreaking research can bring him back to life. Instead, Elodie herself becomes the first to benefit from his work, launching her on a journey that transcends time, love and even death.
As the world around her evolves at a breakneck pace, Elodie must navigate the complexities of immortality. She grapples with the grief of losing her husband, the allure of new love with her longtime friend Archer and the heartache of losing her daughter Elexus. As Elodie transitions from human to Homo deus—a godlike being with limitless access to the universe—she discovers that even in a state of pure data and infinite pleasure, moral dilemmas and existential questions persist. When faced with the ultimate task of saving civilization from the impending end of the universe, Elodie must work with an AI named Coby, who is so powerful he could destroy civilization but also holds the key to its future—and to her past.