Request a meeting with the school’s SENCO. What support are they providing? What support have they already tried that hasn’t worked? What outside agencies have they approached for advice or referred to.
Request an EHCNA yourself. On their website, ISPEA has a model letter you can use. Don’t let anyone put you off. You don’t need the school’s support, you don’t need 2/3 terms of evidence from the school, and you don’t need a diagnosis.
Request social care assessments. A carer’s assessment for you and an assessment of DD’s needs. On their website, Contact has model letters you can use. You will have to fight for support, but it is possible to secure. There may not be anything suitable, but it is also worth looking at your local short breaks offer.
Request a referral to a sleep clinic.
Has DD had OT input, including a sensory OT assessment and a home OT assessment?
You might find non-violent resistance resources useful.
Do DC share a bedroom?
For DS, have a look at Sibs. Some are better than others, but as he gets older, it is worth contacting your local young carers service.
I’m convinced this is a little girl traumatised and not SEN. It started when her dad left. Symptoms can be similar and I feel often traumatised children are mis-diagnosed with SEN.
Even if it is trauma, it would still meet the legal definition of SEN. A diagnosis isn’t required in order for a child to have SEN. It is also possible for it to be trauma and autism. A proper assessment for ASD would also consider other causes.
@KookyMoose if the EHCNA request was made 4 years ago. Even if the parents’ of that child had to appeal refusal to assess and refusal to issue, the LA is in breach of the timescales. If the LA is stalling, the parents should look at a pre-action letter.