in the end all she got from Luke were a couple of incomplete lessons, and some books
Sounds like Luke, minus the books. :p
Luke gave her 1/2 lesson, which amounted to not much more than Obi-Wan’s lecture in Obi-Wan’s cabin, and another history lesson about the Jedi and the phony legend Luke Skywalker. I think Luke learned a little more with Yoda than that. I seem to remember something about levitation, luminous beings, and the dark side and such, but I could be mistaken. 😉