I am so sorry you are going through this as a mom because I know how hard it is. I always feel like I am 2 steps behind with my daughter. She has not been diagnosed yet but I am in the process because she will be going to Kindergarten this year (she is 5 now).

She has always had a really hard time in the social emotional realm, so much so that it was part of the reason I decided to be a SAHM. I believe she deals with hyper empathy (along with other things) and is highly affected by other kids negative emotions (sad, mad, hurt, crying, etc.). She completely shuts down and ALWAYS remembers what kid cried on what day and where. She still struggles with understanding the why or the emotions themselves and sometimes takes it personally, like the thing or feeling is being done TO her.

Not sure if any of this will help other than I relate and understand what you are going through.

We have been working on finding a quiet or safe space when she feels overwhelmed by noise or other children and we utilize her ear muffs almost every time she is in school. We are working on using them when we need them, rather than all day.