She debuts in the first episode of the first season and was portrayed by starring cast member Sierra McClain. In the fifth season , Grace leaves for a mission trip as she felt it was "God's calling", despite the poor timing. She is replaced by her step-son, Wyatt Harris as the series' main dispatcher. In , Grace is a volunteer at a prayer hotline where she meets a distraught Judd through the phone. Judd reveals to her about an emergency he responded to that shook him up where Cal's mother recognized him and told him to get out.
Grace convinces him to go and try to talk to her, even if he would probably get spit, on reciting Psalm After some progress with Cal's mother, Judd manages to get her to talk to him and gets her forgiveness.
While celebrating the success at the bar with her friends, Tommy Vega comes over with Judd, introducing her. Recognizing his name, Judd asks her to dance and he tells her about the success with Cal's mother. After revealing her plans to move, the two of them begin to date and deeply fall in love with each other. Two months after, Grace tells Judd that she decided to stay in Austin and that she loves him and that she knows he loves her too. Judd lies to her and tells her he doesn't feel the same.
Grace leaves the car and they break up that night. A few months later in , Judd comes to the hospital the day Tommy is giving birth and he's meeting Grace in the waiting room, she notices his tattoo.
He asks her about her new job and she tells him that she's training to be a dispatcher. Judd asks her if she's seeing anyone and Grace tells him that yes she's seeing someone, indicating it is him she still wants to be with. Before Judd starts to respond, Charles arrives in the waiting room and excitedly reveals that they're going to be their twins' godparents.
