Karen Chisholm
I read this recently.
From the Blurb:
A false accusation. A brutal murder. Can Ngaire find a killer before he finds her?
Ngaire Blakes is trying to put her life back together. The ex-cop resigned from the police after a vicious assault left her battling PTSD. Dragged into a murder investigation, she’s shocked to discover that all the evidence points to her.