For those who kept nudging me!
I went told him all my concerns about DD, he agreed that it could be personality/4 yr old-itis, but that it also could be AS traits and he was supportive.
I have an appointment to see him with DD on Monday, he wants to meet her properly (only really seen her when in with DS), check her physically (I have hearing concerns with her too so I am hoping he is going to look into that as well).
He says that after that appointment he will arrange for one with a proper paed
I have finally taken a proper step (HV step ages back was crap ).
As much as I am worried about wasting everyone's time and it turning out I just have a "difficult" child, I would rather find out, than NOT find out that she is AS (however mild it seems) and it cause her issues later in life. I'm not stupid, I know it will be long, and hard, especially with her seeming so borderline, but still. I am there.