"The title is indicative of a major symbol in the play. What does Laura's 'glass menagarie' symbolize? What does the unicorn symbolize, particularly after it breaks? Remember what she does with it after it is broken."
So Laura is a high school drop out. She had bad grades in her final exam and just never went back. I think that was because she was very self-concious about her problems. She had a very big brace on her leg that would make a clunking noise when she walked. That lead her to stick to herself and not socialize. These days, after high school, she tried to take a course down at the local college. On the first day she threw up and never went back, because she was so shy. Nowadays, she sticks to playing with her glass collection, all glass horses and one unicorn. The unicorn is her favorite. Amanda, her mother, calls her collection the glass menagarie. Amanda is desperate to see her married, and has Tom, her only son, bring over a nice young man so they can get to know each other. They really hit it off. They started dancing. Jim, the gentleman she is with, accidently knocks over the unicorn and breaks its horn off. After she says its all right, and that hes like the others now.
The unicorn represents Laura, the odd one out. Then after it breaks it shows that she is one of them now, and all she had to do was overcome it. Is this hypothesis correct?