Hope you visit went well Jazz. Had I seen your post sooner (assuming with the time diff that you have gone already), my advice would be:

Be calm.

Don't overstate or understate. It takes a long time to get past an initial misdiagnoses, and much of the time some Docs can see through your misstatements anyway.

Remember, Doc offices are safe zones. I assume at least that the rules are very similar there, and if so, all visits are confidential. What is said there stays there. Normally, they only reason that anything leaves that room is if they rule that you are an immediate danger to yourself or others. If you are, don't hide it.

I am social phobic, I can't talk to people in general. I do online, and I do both in doc sessions and group sessions. Trust the safe zone rules and it you do, it will allow you to be truthful with them as you need to be.

Remember, they have heard everything. You will not shock them with anything you say, so feel free to do so. They need to know.

Try to remember things that you don't normally do. I was initially misdiagnosed in part because I honestly could not remember until my mind cleared. Try to remember all you can.

Don't be afraid to show emotion in there.

Look them in the eyes, it will help them know the truth in what you are saying, or if there is more even it you do not realize it at the time.

Just my little piece of advice, it applies to future visits as well. As for mom, we can't really control how others react I am afraid. They do not have the same point of reference that we do. I feel good for them that they have never had to experience it, but it sure would be nice if they could understand.