It's only the hardest thing in the world to do and I was a shaking wreck anytime I got close to that stuff. Start slow and just let it unfold very gradually. It's like a cork being loosened....not chamgange with a bang. Just do what you can and it will become easier with each session. Breaking down is a good thing; it needs to come out. It is a release. You may get to a point where you cannot wait to see her to talk more; and that is a great feeling. Being accepted and heard may feel amazing and foreign and healing for you. Therapy such a crazy bird and you sound like you are in goods hands.