Dear Scrappinmad:
Hope I can do for my grandchildren what you are doing to encourage Katie's quilting 'career'.
I found a workbook , MASTERING YOUR SEWING MACHINE for the Bernina Sewing machines, and it includes information and projects for the Bernette (and all Bernina sewing machines). It is a simple lesson format that teaches how to use stitches, needles, threads, seams, hems, buttonholes, patchwork quilting, free motion quilting, how to use the different feet, etc., etc. These lessons would guide Katie to using the features of her machine, which many of us may not have learned after many years of ownership.
http://www.sewandquiltstore.com/SewingOutlines.php
This site also has workbooks for Bernina Serger, Bernina Embroidery software and Babylock Sewing machines and sergers.
I also think any beginner could use these lessons as a guide for any machine using the features on their particular machines if they need to learn the basics.
Best wishes to you and Katie!!