Academic communication is consider professional communication. So you should use professional standards when communicating with your professors
Businesses rely on email a great deal. Learn to communicate well via that medium now. It will be to your advantage once you leave academia
You are more likely to get what you need when you need it if you use a professional style of communicating
With Dr. Bareiss, she will assume that your emails are written in a professional style and prioritizes them according. So, for example, something with an inaccurate subject matter (because it was a reply to a different topic) might be ignored for a while because it would seem as it was not as important.
Guidelines on how to do it
There are a lot of resources on the Internet for creating professional quality email. Here are four of them: