Transcend by Jewel E. Ann

“In another life, she was my forever.”

An unexpected tragedy leaves Professor Nathaniel Hunt a widower alone with a newborn baby.
He hires a nanny. She’s young, but well-qualified, with a simple life, a crazy name obsession, and a boyfriend she met at the grocery store.
Over time, he discovers she knows things about him—things that happened before she was born—like a hidden scar on his head, his favorite pizza, and how he cheated on a high school Spanish test.
She speaks familiar words and shares haunting memories that take him back to over two decades earlier when he lost his best friend in a tragic accident.

“I’m afraid of what’s going to happen when you realize I’m not her.”