Who is Mrs. Van Dorn from Things Not Seen and what is their importance?

Mrs. Van Dorn is Alicia's mother. Alicia's mother is a former public relations professional. When Alicia went blind, Mrs. Van Dorn quit her job to take care of Alicia. Mrs. Van Dorn is a very overprotective mother. She is very apprehensive about her blind daughter hanging out with an invisible boy. By the end, when Bobby becomes invisible again, Mrs. Van Dorn feels much better about Alicia hanging around with Bobby because she can visually see that Bobby is actually a normal 15-year-old boy.