The naughtiest girl keeps a secret

In this book, Elizabeth Allen is having a good time with her friends. She and Patrick get going wonderfully. When Elizabeth gets called to William and Rita, she does a noble act and yet feels a bit sorry for herself. When she did not attend Patrick's tennis trials because she had to get her mind off something. Things go wrong Elizabeth Allen is accused of things she did not do. When she is upset with John, he tells her a secret. The little girl does a lot to help John when he gets sick. Elizabeth gets into trouble for the things she did for the secret. What is going to happen to her ? is she going to be the naughtiest girl in the school again??