I agree with FJ. You know we have all discussed a million times right here on this board how testing people, including T's, just sets them up for failure and generally bites us in the butt.

Don't set your T up for failure. It is unfair. It won't prove anything. And I suspect even if she "passed" you still wouldn't trust her. There is nothing she can do right now that would make you even begin to trust her. And that is okay. Let it be what it is. Let the process take all the time it needs. Remember, it may take months or even years of sessions for some people to feel like they can trust their T's. I suspect after what you have been through, it will be on the long end. That's okay, but recognize that testing her really won't prove anything to you until you are ready to accept and trust her.

If you want your friend there, okay. Why don't you ask your current T if that might be a good idea or not? You would probably be more willing to accept her opinion, including if she says that it might not be the best idea.

What I've seen my T and Pdoc do with new patients who brought family or friends with them is they had them come in for about 20 minutes or so, and then the rest of the session was just the client. That gives the new client perhaps some comfort right at the beginning but allows for the privacy and independence for at least half of the session. Perhaps that would work. I'd talk to your current T about it first and go from there.