Sounds like her over-sized ego has gotten in the way of being an effective friend and coach. She doesn't come off as being authentic. It's like she is the type to want to "cure people" with her so-called expertise only because she can then parade around and tell people how incredibly awesome she is. It's not because she genuinely cared about helping that person into well-being.

You ask if there is hope for such a relationship. What kind of relationship is it that you are wanting as your first line indicates that you were already friends. A deeper friendship or a therapeutic relationship? Was anything discussed at the end of the night about getting together as coach/client or friend in the near future?