Revealing mistake: Clearly Melissa Anderson doing all the killing until the unmasking. She's got bright light blue eyes whereas Tracey Bregman's got regular blue eyes.
Revealing mistake: During the flashback to Ginny's operation, you can tell it's a prop head due to the color of the part where the operation's taking place.
Answer: Like all spoiled and mean girls, she blames everyone around her for her problems, when in fact it has nothing to do with her. She wants what she wants, her perfect family with her as the center of attention. The only daughter.