PDD-NOS info anyone please??

Hi, I'm a mum of 4 & 2 step children & a grandma of 1 ! I'd been saying my youngest 2 were not quite right since they were very small. I've been through a rough relationship with their father who was ADHD & ASD who was medicated & ended up in a refuge to cut a long story short when they were both still toddlers. They are both angels at school & then explode when they get home where its safe. I kept pushing for help & I've done every parenting course there is, been assessed inside out by SS & eventually got a CAMHS referral from the school behaviour support who said I'd exhausted all their resourses & got a shes just shy & needs confidence boost & didn't even assess her, only spoke to her once!for my 12 year old & a PDD-NOS & mild ADHD diagnosis for my 11 year old. I was asked if I wanted to medicate her & I said I'd only medicate as a last resort & would try removing e-numbers & asparteme from her diet which has helped a bit so they just discharged us! No info, no support, nothing! I've pushed the school to do an IEP which I'm told is in process now & we have lots of meltdowns over looming sats recently. My 12 year old isn't coping too well at the moment either   I spoke to her tutor today as she is struggling socially & feels she doesn't belong & says she has no friends there & she's a loner bless her. She has always been noise & touch sensitive & some kids have noticed this & are causing her extra problems. A senco there is going to have a chat with her & be in touch...so that is us & our story where we are now...nice to 'meet u all' & I hope to gain some insight into any support available, any benefits we should be getting to help support her & anything else we should know as CAMHS were as much use as a chocolate teapot to be honest!