My sentiments exactly!
Joan was a bully, narcissist, and sexual abuser. A despicable person. All Billie wanted to do was have a cousin with whom she could share a loving, supportive relationship. I felt that she looked up to and wanted to emulate some of Joan’s characteristics. And in response, Joan ridiculed, belittled, humiliated, and abused Billie. Her death created complicated feelings for Billie, but since she was the more enlightened & intelligent person, she eventually worked through her emotions.