Spoiler Alert...
Do not read blurb!
Especially, Do Not read reviews
Don't even read the preface at the beginning of the book
She'd changed miraculously...
A bullet wound had put Laura Hudson into a coma. Awakening with amnesia, she was told that the police still didn't know who'd shot her or why. Even worse, she was headed toward a slow recovery on a cattle ranch -- with a husband and daughter who apparently hated her.
To Ryder Hudson, Laura seemed like a brand-new woman. Even little Abby warmed to her. But Ryder had to stay on guard. Because he was falling in love with his wife again -- even as he began to suspect that she wasn't Laura at all...but a potentially dangerous stranger!
Since you read the blurb...
IMHO, everybody in "The other Laura" commits adultry...
see Schrödinger's Cat ,
Do read "What Lies Beneath" by Andrea Laurence also with the above warnings