She should have spent $30 on a Radio Shack lapel microphone. The sound would have lent an air of professionalism to the video. The built-in mics are never good enough. The mic needs to be about 8 inches from your mough.
Here is her second video.
Videos are a good way to convey ideas. Anyone can produce one. You can edit it with free software, either iMovie or Microsoft Movie Maker.