I'm not a psychologist, so I'm not that familiar with too many specific techniques, but a good sports psychologist should be able to help her with things like confidence, improving focus so all the fan and media circus doesn't get to her, etc. One technique that's very commonly used by sports psychologist is visualization, and many many skaters talk about how that has helped them, including Elizabeth Manley and Joannie Rochette. And aside from personal testimonials from athletes about how it helped them, there's actual scientific evidence that it helps at a neurological level because visualizing doing an activity actually reinforces the neural pathways in the brain. Basically, the same neurons fire signals to your muscles when you're visualizing that activity as when you're physically doing that activity, and with more practice and more visualization, those pathways get stronger, helping create what we call muscle memory - or at least the neurological part of muscle memory.
By the GPF, Julia was expecting to make mistakes in the second half of her FS. Had she had a good amount of visualizing successful programs, her brain would have had well developed neural pathways for a successful program and we wouldn't have seen that confusion that came over her in some of her competitions. But that's really the main technique I'm familiar with from sports psychology (I actually know about it from reading a lot about neuroscience and neuroplasticity).