Truly Madly — Alicia Dean

A broken heart drove her away--a family tragedy brought her back.

After her parents' murder/suicide, Isabelle Connelly returns to her home town to settle their estate. But a year later, with her business concluded, Isabelle still hasn't left, even though she has every reason to. The townspeople shun her because of her family's history of mental instability, she hasn't gotten over her feelings for the man who shattered her heart, and now she's a suspect in a murder and mysterious house fire.

Someone is out to frame Isabelle for the crimes. Failing that, it appears they plan to make Isabelle their next victim.