A.
We used 1000 Words Photography, Erin (Kathleen) Ross, and were very happy. Her website is http://www.1000wordsdfw.com/
Her prices are very reasonable, with packages starting at $150 that include session fee, location fee, and a generous assortment of pictures in different poses and sizes.
She doesn't have a studio, but will go wherever you like, whether that's outside (we did the Ft. Worth Botanical Gardens and got beautiful shots) or in your home.