Good ideas!
I do think that her learning the ability from the Jedi Texts makes sense, and gives the texts more relevance to the story. However, I think it’s more powerful if an ability comes from a character rather than an object, since it is able to say so much more about that character, and Leia needs all of the help she can get here.
But yes, a merging of the ideas gives us the best of both worlds.
If someone provides a high-quality image of the page in the texts, I can try my hand at drawing a replacement.