Wrong Memories. Minnesota Romance novel series

Lucy Johnson wakes up in a strange hospital in St. Paul with bruises and a concussion. Her last memories are of 1955, yet everyone tells her it's 2015. A policeman questions her about the hit and run car accident, but she doesn't remember. He thinks she's playing a game. When he tells her everyone she remembers is dead, including her parents, she panics and takes a bus to Mankato see for herself. Dave Fuller sits next to her on the bus and is intrigued by her and very attracted, but afraid she's a mental case like his cousin Cora, who people made fun of until she committed suicide.
When Dave learns she's taken a job at his mother's restaurant, he's determined to stay in touch to protect his mother. But he didn't count on falling in love or of traveling a weird journey of discovery with her.