She breaks into her victim's home and confronts him with her feelings for him and when he rejects her she grabs the nearest object she can find and bludgeons him over the head, killing him.
Method of Disposal
She is a very unstable woman who developed an unhealty crush on a man who didn't know her and as a result started stalking him and when he rejected her advances she killed him to "preserve their love".
Fiona Camp is a character on DEXTER. She was a woman obsessed with a man named Jack Rice and even imagined that they were in a relationship. When he rejected her advances, she killed him and made it look like a robber who had committed several similar crimes in the area. When questioned by the police, she presented herself as Jack's fiance with the help of a fake photo of her and Jack together and was able to avoid suspicion. She presented herself as the grieving fiance (Debra referred to her as 'weepbag Fiona'). Dexter however discovered that the blood spatter did not match someone who was the height of the alleged killer, but fitted perfectly for someone of Fiona's height. Once it was determined that none of Jack's friends knew her and that the photo of Fiona and Jack together was photoshopped then Officer Debra Morgan and DetectiveJoey Quinn were able to get a confession using the bad cop/good cop routine.