Clearly the higher ups or supervisors or whatever they were in the church/agency were not thinking of your best interests when they decided no more sessions. Even though she was a volunteer, she was effectively "fired" from the organization. Here in the U.S. there are specific state laws that govern employment that may impact whether a T can even speak to clients again.

My current T was employed by a private counseling group--which I never thought of as an issue until he decided to leave the practice and work for another (smaller) practice. When he gave them his 2 week notice they fired him and because of his contractual terms of employment, he wasn't allowed to contact his clients at all.

However, an administrator at the agency called me and told me that he suddenly quit and no they didn't know where he was going, would I please make an appointment with one of their approved counselors. I did not. I did not believe what they were trying to imply, that he would be so unprofessional he would not give his clients any warning at all before he was leaving. But I had his cell phone and I texted him, learned where he was going to be working in a few weeks and have seen him there ever since.

So I do not believe that administrators (I tend to not think any of them, in my experience, work in anyone's best interests but their own) much care about clients or what is best for them. The administrator at my T's former agency was not even a mental health professional, but some accountant type.

If things had turned out differently and I couldn't find my T after this administrative "termination," I would have been sad and upset about not having the closure that many people would want. So i think your reaction is normal and i hope you feel better soon.