The Undertaking of Hart and Mercy

What is not to adore about this book and characters?!! A must read for fantasy cozy, there I said it! Also, I will never think about the appendix the same. I like the world created, though not sure we can do the enemy to lovers bit again, but would like to see the world visited again. I'd also like Mercy to see me off into the next world...Books and reading can be strange connections, my dog Gracie went over the rainbow last week, and Hart's dog was Gracie, so it caught in my throat when I read about her.