If, for any reason, the emails are not considered valid, you have other examples of unorthodox behavior that created an unhealthy dependency, such as going with you to the dentist. There are witnesses to that. And while it was incredibly helpful to you at the time, it shows the dynamic and the progression of your relationship. If she holds true to form, she'll bring up that you wanted to resume therapy with her recently and that this is in retaliation. Examples of how she love bombed you will go a long way to show how you were affected--the stress of terminating, what it did to you, how you just wanted to end the suffering by returning to her. It shows her hold on you.