Nah, if you watch the whole speech she refers to her hand during the speech several times. She went with prepared notes but like many speakers went into areas uncovered by the notes. Actually watch the video of the whole speech, you will see what I am talking about.
During the Q&A, you see her look at her hand only once and immediately work on removing the words from her hand. The words were written for the speech and not the Q&A just based on when she actually referred to them and how often.
Let's back up a minute.
First, you said that she pulled off "a complete speech with simple one-word reminder notes." Well, you know and I know that what you said is false. She had a prepared speech and she read from her prepared speech as she delivered it. She didn't pull off "a complete speech with simple one-word reminders."
Once you acknowledge your claim was total bullshit we can address the other stuff.