Grace is the sole waitress who works at Zeke's Diner in Handler's Corners.
Stanford Rhodes has an obvious crush on Grace and it's possible that Zoom Takazumi might have a small crush on her also. It is unknown who Grace really likes, because though she once went on a movie date with Zoom, she also kissed Stanford in Time Out.
It's possible she might prefer Zoom over Stanford, because in Full Revolution, she mentions how much she wants the BF5-team back, Zoom especially.
Throughout the series, Grace has always worn the same uniform at Zeke's Diner; pink T-shirt with white cuff links and open collar, and name tag, tan pants with a dark blue apron over them, sneakers, and is rarely seen with and without her pink visor as shown in Time Out.