Katherin bite her lip. She hadn't meant to be loud but that happened sometimes. She would have to remember that Sue was sensitive to sound. Fortunately Katherin had some experience with that one of her foster brothers had be autistic and very sensitive to sound. She had made an effort to learn some sign language hoping that would help her be close to him. Katherin signed. " I apologize I can get loud when I am excited. I'll be more careful."