A couple of times I wondered about the protagonists (from a small town in Maine), and by implication the target audience. For people who wanted to visit France, their knowledge of basics seemed to be limited, while in many other cases, their knowledge of French history was absolutely encyclopedic.
Truffles, for example, could cost thousands of euros for a kilo, which she thought was less than a pound, but she wasn't actually sure.This seemed doubly odd because these tourists were also buying fresh food, where they should have had plenty of direct experience with kilograms.
Overall, a pleasant cozy mystery.
Post note: Given the title, I expected recipes, but, alas, no recipes.