She's been like this for many months and 0 improvement
She will scream if I go up from the sofa and move, for example, to the TV unit (a couple of inches)
I don't want her on my lap whilst on the loo. And I'm firm. But no distraction works and being in the loo with me isn't enough, she has to be on me
If denied close contact with me, she bangs her head on the floor. And the screams sound like murder is being committed 
She screams when I speak to her brother. I can't say his name without her hitting herself in the face, and head banging
I can't leave a room without her springing like her life depends on it
Slings don't work. She hates them 
despite loving to be cuddles
The cuddles you give her can't just be you sat with her. You have to physically wrap your arms around her body, and squeeze like a deep pressure hold. Otherwise she will keep printing you to tighten up
It is exhausting. The strange thing is, she loves pre school (goes for a few afternoons), and runs in there! No issues
But once with me, the constant separation anxiety doesn't let up
I can't so much as say someone's name and address them, without deafening screaming
Here's the serious part - The police have been called on me. And they attended my door. I was absolutely so worried. But I explained and they were as nice as pie - and left. I understand why someone would call, and would rather they did and an innocent child be saved! But it is causing me a lot of anxiety as my fears of just how bad she sounds have been confirmed
Her brother is profoundly disabled and needs a lot of care, but generally just flutters around the place. He is however very loud! He can't speak but makes vocal stims. This is very stressful for her
What on earth can I do? Is it an age thing? She has a speech delay so I cannot ask her, and she doesn't understand basic sentences yet so no reasoning, however I do try anyway and continue to do so