The Glass Menagerie

A portion of this story is about a girl named Laura who seemed to be lost in her own world. She seemed to be crippled in her mind. For this she was afraid to deal with the real world. Do you think its possible for someone to be handicapped mentally and not physically? In Laura's case i think it was just fear of the outside world. A fear of failure or doing something wrong. She had an inferiority complex, she didn't have much faith in herself. I don't consider these to be a sign of being crippled mentally.