She calls her kid sister selfish for not leaving everything behind- school, friends, life, brother (who wouldn't have known where the hell they'd gone to) to run off with her and her on off boyfriend... Way to emotionally blackmail a 13 year old Kate!
i don't really like kate, but i can see why she said that to sophie! she was just projecting her hurt. its easy to blame the people closest. it was wrong but im sure she will see the error in her ways.