I would add that you may want to figure out what mode of communication your supervisor prefers in general, and with regard to advising students on final projects in particular. Pushing for a meeting might work, but it could also add to the supervisor's load if s/he is already overburdened with meetings with advisees. I would recommend to stop by her office, explain that you are looking for some additional feedback from her as you work on completing the project, and ask what she would prefer as as plan for communicating about it. Chances are it could be a mix of email and face-to-face.
Also, you could significantly increase your chances of hearing from the advisor by email if you adapt to her emailing style. People tend to have preferences in terms of how they communicate by email. Some like long, drawn-out emails with lots of detail. Others are absolute minimalists, writing barely a line in response to an inquiry of any length. A good rule of thumb is that if one writes short emails, one also prefers to receive/read short emails.
I do not believe I ever met someone who asked me to write them longer emails! (except my mom perhaps ;) So reviewing your past communication might suggest adjustments you could make in your emailing style, so it is "easy on the eyes" for the advisor. This small adaptation can pay big dividends in the long-term, as you teach yourself to consider your conversation partners' preferences and adapt to them. They will subconsciously perceive correspondence from you more favorably, which in turn will increase the chance of quicker and more positive communication.
This might seem trivial, but many people never intentionally learn good emailing practices. They just assume that if they get responses, their emails must be good enough. However, it does not take much effort to advance from 'good enough' to 'very good', but it could make a difference at critical times in your work or career.
A couple resources:
Effective E-mail Communication - guide from the UNC-Chapel Hill Writing Center
Writing Effective Emails