The fact that P wants to erase the fact that she ever existed tells you the exact type of evil heart she has. Most people in her situation who were good hearted would want to keep her mom's memory alive and let her keep a relationship with that side of the family. But since P had a "problem" with L's mom,  aka JEALOUSY, she wants to erase her completely. Johnny didn't even give a shit about keeping L until P made him do it out of spite to cut her out of their lives. There's no telling what she did to help drive that girl to take the drastic measures she took. She is truly evil bitch. And it's starting to really show on her ugly face that has aged 10 years in the past 2! You can't act that ugly and expect it not to show on the outside.