Answer:
I believe that given the context of the information provided, the best answer to the question: What is the most accurate way for her to label this file, would be: Shakespeare Essay Draft 2.
Step-by-step explanation:
The reason for this is that, taking in the information provided by the excerpt, it seems that aside from Romeo and Juliet, Nicki is not working on any other of Shakespeare´s plays. Therefore, she does not need to make the file name longer and more complex than necessary. By mentioning that the file regards the play from Shakespeare, and placing in the name that it is the second draft of the text, it should be enough to remind her, when she looks it up, that this one file is where her second draft for her "Romeo and Juliet" essay is placed.