I guess I'm just not a short story person. Perhaps they were ruined for me by too many forced readings of "The Rocking Horse Winner" during my school days. If I like a short story, I'm disappointed in it because it doesn't continue to novel-length. If I dislike it, I feel like my time has been wasted.
I had a little of each of those feelings in reading The Darkness of Wallis Simpson. I purchased it because, at first, I was under the misapprehension that it was a novel about Wallis Simpson's final days. This is my own fault, for not paging through and seeing what I was getting. The story about the dying Duchess alone and abused in her final days, is dark and interesting, but was too short to be developed sufficiently.
Thereafter followed several stories that just didn't merit the ink. I'm sure it isn't the author's failing, but mine, that I don't see the point of How it Stacks Up or The Beauty of the Dawn Shift. And let's just say that in Death of an Advocate, death isn't necessarily a bad thing.
I found myself drawn to Loves Me, Loves Me Not for it's "Heiress" qualities, and Peerless was a charming finish to the book, but all in all, I would have much preferred 215 fully-developed pages of a novel about The Duchess of Windsor. What you get out of this book will hugely depend on the expectations and interests you bring to it, and I obviously did not bring the correct ones.