I don't have the book and thus am probably being unfair, but based on reviews I've read and on what I've read on her blog, I dislike the use of the term "cunning folk method." To me it seems like a buzzword, a somewhat pretentious way to bestow a mantle of paganism on a system that really doesn't have anything to do with paganism.
The use of the term also suggests or implies that her method was actually historically used by witches or pagans, which is obviously not the case - it's basically Dawn Jackson's Hedgewitchery playing-card system. I'm glad she credits Jackson (thanks to Astraea for mentioning that), but while Jackson herself is obviously pagan, I don't think she (Jackson) claims or suggests such a thing.
It also bothers me that several of the reviews I've read refer to the "cunning folk method" of cartomancy as if it's an actual thing.
If one wants to present an approach that's relatively simple, common-sense, and down-to-earth, then why not just say that? Creating a buzz-worthy catchphrase seems to me to be the very opposite of the qualities she's claiming for her system.