Rain by C.K. Leger
Trapped in a marriage with an alcoholic husband she loathes, Kitty Lyons lives with regret daily. When Levi, the only man she ever loved, dies saving the life of a child, Kitty is given the chance to switch lives with Kat, the version of herself who had been brave enough to claim Levi as her own. But what might have been is not always as good as what truly was. To get back to her children, Kitty will have to come face to face with the traumatic aspects of her own past that led her to the choices that ultimately changed her fate.