Sorry, I'm still here! Busy day!
Need to work theough the comments, but to answer some questions...
No idea if the boy in question has any additional needs. Outwardly, he seems a pleasant, bright boy when we've been at class parties, or crossed paths in social situations prior to this. However, no-one would think DD did, so obviously I don't know.
DD 100% understands, but if they are playing a whole class game and they interact, I don't think just not being able to address him in case he becomes angry is something DD should have to worry about.
She doesn't have or need any 1:1 support at this stage. She's very bright, excels at school, no issues there, etc.
Moving her would be a struggle for her. The close knit group.of friends she has, who really get her, she's known since she was 2 or 3. She would struggle being away from friends and a familiar setting.
There are certain children at the school who other children know have additional needs which makes them use their hands as language. He isn't one of them, as far as I'm/she's aware.
Also, I don't think we should be teaching a young girl that is a boy suddenly decides he wants to stand in her space in the line, she should move instead of "possibly provoking him" but politely saying no, in case he punches her in the face, or takes and damages her belongings.
I'll keep reading and catch up!