I am assuming your Mother has sewing experience since she invested in such an expensive machine. I have a "higher" model then the Sapphire and find it very user friendly. I purchased mine online so do not have free classes, but classes are available; however, the manuel is easy to follow.
I'd suggest your Mother start on page 1 of the manuel and just follow through step-by-step and she'll soon be a pro. It just takes time and effort to learn anything I find.