Port Washington’s Taylor Sinett, a 15-year old ninth grader at Schreiber High School, will be signing copies of her book, Weasel on an Easel, at Harborfest on Sunday. All the proceeds of sales of the book will go to the Chrohn’s and Colitis Foundation of America (CCFA). The book is dedicated to her cousin who suffers from ulcerative colitis, a chronic disease of the colon.