Books with title Standing In Different Worlds

Tracey lives in a different world from the other girls. She comes from a council estate, goes to the local school and has ordinary parents. Since starting at Ashwood Stables, she is learning to move in both worlds. There are some people who dislike the idea and who would like to land her in trouble. There is a complicated theft going on. She is targeted as the weak link in the Ashwood Girls while the real target is Melissa's father. Working together, the girls overcome suspicion and solve the problem.