Grace Medar (also Campbell) was the adoptive daughter of Kim Campbell. It was later discovered that Grace was illegally taken from Rwanda.
Grace's birth mother wanted Kim to take Grace with her on her return to England under the premise of having a better life. However, Grace's birth father did not want this, so he tipped off the authorities that Kim had participated in human trafficking, which ultimately led to Grace being returned to her parents, leaving Kim heartbroken.
When Kim is first visited by the authorities about Grace she asks her colleague Steph Haydock to take Grace and look after her in a separate house to Kim's, so that when the authorities come looking for Grace, they will not find anything.