Sorry to butt in - I want to second what Purple and Thumb are saying. I have ms, which means that despite medication I am in constant pain and get exhausted when I've been doing almost nothing!
I have a brilliant SW, who gathered together a whole load of people and got me help.
I had no idea why the neuro-psychologist was included. There was "nothing wrong with me" I thought, except ms, but she was actually the most helpful of the lot. Just by coming round a few times, chatting to me at my kitchen table drinking coffee, she somehow opened a whole new world to me.
Having not worked for nearly 15 years due to the variability in my condition, the exhaustion and the pain, not to mention the uncontrollable bladder and a whole host of other things, I have overcome my fear and reluctance and inability, and I actually work! I have a job! I am a different person to that sad, isolated, frustrated little person I was a year or two ago.
That's down to the neuro-psych.
I don't want to upset you or pressure you, and I'm definitely not judging you, but the MH services can be superb. It may be that the staff have changed since you saw them last, and there's no doubt that some guidelines and recommendations will be different now.
If your gp is sympathetic to you, and has some understanding of your and your dd's conditions, or at least the impact they have on you both, then youmay find that the whole attitude towards you will be different too.
The psychologist who saw you before sounds atrocious and with any luck will have moved on anyway. But you have diagnoses now, so it doesn't matter what the psych 'believes', they will have to accept it is all real. If they don't then make a strong complaint.
It is always helpful to take some very deep breaths before you do or say anything. This situation has clearly been going on for years with not much changing, and you getting more and more frustrated (and who can blame you), but being frustrated and emotional is not conducive to fruitful communication, particularly not with 'experts'.
When you are in a situation where you want something from someone in so-called authority (the EW officer, the school, the hospital etc) take 3 or 4 deep breaths before you say anything, every time. Is that suggestion horribly patronising of me? i'm sorry if it is, I really am not trying to upset you or anger you. I am worried about you, as simple as that. No one should be in the situation you're in, and so unsupported.
Good luck 