Always remember your Ghost Adventures history when naming story characters. I had Lavinia on a short list and it sounded familiar, but I couldn't place it. Then it hit me. First female serial killer (supposedly). Her name was Lavinia Fisher (also might have been mentioned in Criminal Minds? Which i also watch religiously) 

Fine name and all, it's just that i'm going to remember that whenever I write the name, so it will not work, especially since the character is far from a serial killer.