I thought this was great since the psychologist was always listening to the questions that the patient/client asked her, and used that information to eventually understand what happened.
Without giving anything away then this is what good psychologists do, and they will reflect on their own experiences (whether personal or from previous cases) to come to a conclusion about what caused certain actions and the state of mind of their patient/client preceding that and after that.
I loved Cracker (10/10, showing my age here) and thought that this was along the same lines of a vulnerable psychologist confronting a very difficult case.
So, 8/10.