Bella being a black widow without being the 3rd on the will is a thought I hadn't entertained yet. Quite interesting train of thought there. I just doubt Theressa is the 3rd because I doubt the father would entertain/be entertained by that type of woman. Unless she's designed to be the lightning rod for all the bad shit in the end. But after all the intrigue and red herrings this feel like too easy a solution.
Sometimes I like to look at the meta reasons as well. Like ruling out Lilly and Debbie because it would bust the whole Katie, Lilly, Debbie triangle.
So you run to the next most suspicious gal.
Jk I'm not so sure about Jolina anymore. She had her suspicious moments but she also helped us with dogboy. And she certainly has a justified reason to be angry now.