Lest She Forget by Lisa Malice

You can't outrun your past.
After surviving a car crash, a young woman wakes from a coma with amnesia, a battered face, and no identity. Horrific flashbacks and nightmares convince her psychiatrist that a repressed tragedy is the source of her memory loss. Her efforts to track down clues to her identity reveal a suspicious stalker following her every inquiry, hot on her trail for some dark reason. Her best defense against a forgotten killer is terrifyingly locked inside her head.
With more violence hitting the newspaper headlines, Kay races to stop the bloodshed, but everyone has deadly secrets to hide-even her-forcing her to choose between living a horrific lie or defending the truth with her life.