John -- which Pfaff does she have? I'm also a Pfaffie... I have the 2030 and the 7570 (although I am a total newbie with the 7570 -- one day maybe I'll be able to master embroidery -- or at least be moderatly successful with it!
I belong to another group that is comprised of Pfaff owners... almost exclusively. The group is an EXTRAORDINARY resource when it comes to any question Pfaff related.
Encourage your wife to check out
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I'm sure she'll find online help there... and I know there is one active poster from Kingsport -- which doesn't seem to be too far away from you. Her screen name is JulieTN.
Good luck! I'm sure she'll love her Pfaff!!!