Grace Okanawe is the young, sickly half-sister of Tom Okanawe. She lives with his father and her mother (therefore Tom's step-mother). At first it is shown that Tom has no care for her as she always has all of the attention, although he begins to understand and starts to visit her when he goes to his father's on weekends. Tom is shown to be very jealous of her. But throughout Series 1 and Series 2, we don't see Grace at all which makes sense seeing as how Tom's father, step-mother, and half-sister live in Manchester and the setting for the show is Stoneybridge.