Basically this needs to be re-written and needs some length added. Which means you can absolutely ad content that fits.
Here was the overall instructions:
Write an eight- to ten-page paper, in which you compare and contrast two literary works from this course that share the same theme (using the “Themes & Corresponding Works” list, below, as a guide).
The paper should be organized around your thesis (argument), which is the main point of the entire essay. When developing a thesis for a comparative paper, consider how a comparison of the works provides deeper insight into the topic of your paper (i.e., think about why you have chosen to look at these particular works in relation to one another). In your analysis, consider the relationships among the following elements: