Answer and explanation:
I believe there are several differences she will notice, but two of them will strike her more acutely.
First, she will be looking at her audience. Speaking to a camera is far from being as intimidating as speaking to a group of real people who is right in front of you. Seeing their reactions - interest, drowsiness, boredom, laughter etc. - may interfere in Maizie's performance. She will process what she sees with neutrality, positivity, or negativity. She will feel certain emotions in connection to those interpretations which may, therefore, cause her to be more or less nervous.
Another difference she will notice is the fact that there is no editing to what she is saying. When recording something, editing is always a possibility, unless, of course, we are talking of a live stream. But in general, if you're making mistakes, you can cut and start over, or simply let it roll and then edit those mistakes out. In a real-time presentation, mistakes will be made and seen/heard by the audience immediately. It takes composure, poise, and the ability to laugh at oneself to keep the presentation going.
