Stop DD staring

[P0ndering]

Yesterday we were at the swimming pool and I noticed my DD (Just) 6 was staring at a boy of maybe 11 or 12. He was non neuro typical, had involuntary hand movements and was chatting away to himself. We were in the queue for the slides and she was just interested, but staring. I felt we were too close to him for me to say anything, but also didn't want her just to stare. She's done it before with other physical and unusual looks, but I'm not sure what the best way to handle this is.
Parents / teachers/ adults with non typical physical attributes, what do you prefer? How do you prefer parents to talk to their children about differences in a positive, encouraging and helpful way?

I would be inclined to talk to her about how people have different coloured hair, eyes, skin & it’s just the same. Nobody looks the same & it’s not nice to stare x

The parents I know with disabled children don't mind the children so much but still get adults staring!

Could you explain how the other person feels when she stares?ie explain that if someone stares at you feel sad and embarrassed and that it's not nice?

Do you have any centres or charity run places where adults and children with SEN or disabilities volunteer? If so could you take your dd there to get her more used to the fact that everyone is different and interact? We have a great kids farm which does this also scope charity shops often have disabled staff.