As someone who has lived in Houston, the episode was factually inaccurate as to the area. Katy is in Harris County. Harris County family courts are in downtown Houston, which is not the quaint small town environment portrayed in the episode. I realize it served the narrative of the show, but it was so, so wrong.
The accent of the Diana character was absolutely not accurate for the suburban Houston metro. I'll be happy if we never hear Diana and her "Well, I declare!" Scarlett O'Hara inflections again.