Margaret Grace aka Camille Minichino
Her series about Geraldine Porter, granddaughter Maddie and their adventures sounds very interesting.
Look at her minis here:
http://www.dollhousemysteries.com/index.html
Christine A. Verstraete has published a mini-Ebook, and Searching For a Starry Night, a miniature art mystery.
Christine's blog is here:
http://candidcanine.blogspot.com/
You can see Christine's miniatures and read more about the book at:
http://cverstraete.com/