The Temple of Maggie Stone: Annals of S.O.L.M. Book Two of The Covenant Crisis

A miracle from hell.
Ninety-year-old Maggie Stone is dying of cancer, and she wants more time.
When a brilliant but unstable doctor offers Maggie a new body and a second chance at life, it sounds like a miracle of modern science-a transfer of consciousness, a perfected synthetic vessel, engineered immortality.
Maggie awakens young and strong. She'll have more time with Ray. More time with her children. But as Maggie discovers that a second chance at life might be more tragedy than miracle, so...