It's an entitlement type, mental "disease" spreading around of don't tell me I'm wrong or make me feel bad. Everyone wants to be the victim because they have been made to feel bad or have been called out.
Clearly in the wrong and was caught in the act. So what does she do instead of owning up to her mistake? What does she do instead of doing the right thing? She does all the wrong things because "F" the rest of you. She's getting hers and doing what she wants and nobody gets to question her.
It's a rather sickening phase society is going through.