At some point it dawned on me that maybe she doesn't want to be a soapbox. Maybe she doesn't want to listen to her mother give the same lecture on her oddly formed brain. I wouldn't.
So we tried some other things. Shorter explanations. Just saying she has RS and letting people wonder. Saying she has some vague developmental issues and stopping the conversations. And even getting annoyed when people were rude enough to ask.
But then I realized it was time to take my own advice. Why does she fall? Because its part if being Abby. Why does she roll her head? Because its part of being Abby.
Funny thing is... It works.