thinking about how kathy’s murder spree is very much motivated by selfishness, and she and robert both acknowledge this fact. she only targeted him because of nicole, her own view of love so twisted ( because of her unrequited feelings for wade; he only loved the false image of kathy, never her real self ) from her past that she decided robert would be perfect for her game just because his girlfriend brought him with her, just because there was someone in nicole’s life she could use to hurt her. robert didn’t know her as kathy or as kay, he hadn’t bullied her. but at that point she didn’t care.
kathy could have chosen to live her life and move on, but she wanted to kill people. hungered for it, even. she wanted them to suffer in a way that was extremely disproportionate to whatever they did to her, and then tried to justify it using the ‘golden rule’: do unto others as you would have them do unto you. but no one ever tried to kill her, did they, kathy?
she doesn’t want to apologize. she doesn’t think she did anything deserving of an apology in the first place. and robert does not feel sorry for her.