The word "dream" emphasises the longing which the persona holds that is not quite tangible - the repetition implies this "dream" is reoccurring, showing that the persona's longing is all the more strong.
It is difficult to write a PSA or a Public Service Announcement that operates in just sixty (60) seconds because you have to consider a lot of factors into writing it. First, you consider what message you want to convey. Second, you consider what kind of audience you're targeting. Lastly, you have to make sure that the PSA will effectively convey the message to the target audience in such short amount of time.
According to this excerpt from The Miracle Worker, it is narrated that Annie talks about a place (presumably a school) that taught her how to spell, helped her grow and taught her what help is.
The word that best describes Annie in this excerpt is that she is GRATEFUL.
