Can you just share this post with her as a start? It's honest and clear. A good therapist will never have been through what we have, not exactly, as two people can't share all those experiences, though it feels like it would be so helpful if they could. But with my own current excellent therapist, I have found that she is wise enough, thorough enough and experienced enough to be able to come to understand everything I tell her with time and help me with it brilliantly.