Your assignment, after reading both the play romeo and juilet and the corresponding pages in Garber, is to write a thoughtful analysis of the Garber text including both her major points/thesis and your own critical response to both texts.
It is an important and necessary critical skill to articulate your thoughts in a concise paper. You will probably need to write the paper and then go back to edit out extraneous details and verbiage.
What you should have left is a lively and excellent analysis/discussion of the play and the Garber text. It will be a challenge, but a most worthwhile one.
Be sure to identify her thesis, major lines of argument and how she supports those arguments. This is not a “review” — you are only taking apart her chapter to better understand it and the play.
You are free to agree or disagree with her points, but be sure you can support either. Do not address whether you like the chapter or not. The point of the assignment is for you to analyze her arguments to better understand the plays.
Your finished paper will be 2-3 pages in length, and be sure to complete a MLA Works Cited entry for Garber’s text as you will be quoting from it in your paper as well as the play if you choose to quote from it as well.