DD is 2.9 and at nursery 5 days a week - happy and settled, great relationship with keyworker.
Background: DD has language delay - knows hundreds of nouns, can form a handful of small sentences 'Daddy where are you?' 'More juice please' that have taken months of constant repetition for her to learn. We start private therapy next week, as our concerns are largely her not talking at all outside the house - she went months at nursery of being non verbal but is now at one word speech. She also has a lack of expressive/functional language - she doesnt really communicate her needs. Upon observation, the speech therapist said she would not be surprised if DD was later diagnosed with autism - its not recognisable as she doesnt stim or do any of the more common ASD traits but they believe her noise sensitivity and speech delay is a sign.
She is really sensitive to the sound of other children and of sirens. Its not ALL the time, its like she has a pressure gauge and if its maxed out she cant cope at all. Nursery are great at recognising her need for quiet time.
The issue we have now is she has started to try and hit children that make too much noise.
On Friday we went to an easter egg hunt, and then a playground. She was having a great time and not bothered about the noise from other children (whereas sometimes it just takes one child across the street for her to meltdown). However there was an older girl who started screeching (tbf, it was annoying!) and DD marched up to her and tried to hit her. We have never seen her do this before - she normally cries and wants to be picked up. I explained how we do not hit because its not kind and removed her from the sound.
I thought it was a one off, however last night at nursery pick up, she was all happy when another child started to cry and DD went to smack her. Nursery anticipated this, which makes me think its not new behaviour and I will discuss it with them later.
My question is, do I just treat this as I would an ND child, and explain how we do not hit? I feel her issue is because she cannot communicate her upset at the noise, shes now hitting (no idea where shes picked that up from!). Its obviously some kind of gut reaction towards the triggering sound.
Anyone experienced similar who can advise?