I learned on a 201-2 also.
The interesting item - after DH got mine all up and running, I sat down at it and it just felt "right" even though I had not sewn on one for over 30 years! It's strange how the body remembers, even if the brain isn't sure.
I've also have a 15, and though I enjoy the machine, it does not give me the same "memory lane" feel as the 201. So maybe have your wife sew on one for a while and see if it "feels" right.