I mean, the blurb for the book says she's sharing her "passion for baking." Girlfriend can't even bake Blondies, basic baking as basic comes, without looking like she's an alien who's never seen baking utensils. It WAS a money grab. She has no more "passion for baking" than I do for learning dead languages.
I would personally not do a random, ghost written, ghost produced probably too, book about something I have a vague interest in, and even vaguer knowledge on, just to make money but that's why I have a real job and I'm not an influencer