I think that Madame Rubinstein cares for Isabella. According to the text, Isabella got a note and Madame Rubinstein cried and smiled at Isabella, because she was getting Isabella into a recital. So logan got suspended, because he did some stuff at school. So now he is going to therapy. I like the ending, because at the end it kind of was a flashback to when she got her first piano. When she got her first piano she danced her fingers on the piano.
Hudson, I agree that she cares a lot about Isabella because she cares about what Isabella thinks about things that she enjoys doing.