The movie deals with a young girl who suddenly is invisible to everyone.  It first shows her in a classroom and the teacher asks a question, she raises her hand and wants to answer the question but the teacher ignores her. She is then at home getting ready for school and no one in her family acts like they can see her.  They are taking a first day at school picture and she is not in it.  In another scene she meets a man who can see her and pulls her though a door and tells her he cannot let her back in.  Can someone please tell me what the name of this movie is? Thank you!!