Two days later, her feet taking her at a quick clip down the back stairs of The Fitz restaurant and into the hallway leading to the bar, Brianne took a moment to survey the room. Most of the cocktail tables were full for happy hour. A sprinkling of laugher and the buzz of televisions intermixed easily together.               Smiling absently as she crossed from the bar and into the dining room, she watched one of a new server greeting a table.             “I think she’s going to be good.”             Turning her head at the sound of Shana, who Brianne had come to realize moved so stealthily that hardly…