so having read Lemma: the last dance (everyone go check out Midori’s patreon and give them money in exchange for the best hypnosis themed stories) a thought occurred to me; is Rhoda the Mighty the only person in possession of a Book whom hasn’t taken control of Lemma’s mind?

Nope. The druid who had the book in “The Beast of the (Morning) Wood” was acting in good faith–it was the Old One that controlled Lemma and everyone else.

I’ve also generally assumed there are at least a couple books Lemma picked up between stories.

ETA: also, thank you for the lovely plug!