What is the main conflict in Sweet and Deadly by Charlaine Harris?

It is a novel of secrets and murder with a little romance thrown in for good measure. The heroine of the novel, Catherine Linton, is in the depth of depression after the loss of her parents. On an innocent afternoon excursion, Catherine finds the dead body of a family friend, an event that drags her from her self -mposed isolation. Catherine is convinced the death of this woman is connected to the deaths of her parents, and she is determined to find the culprit.