I think once you have one AS child, you will always look at your other and wonder. Something is "off" with my daughter (most likely a propensity to depression), and while I've always been relatively sure it isn't AS, I do question myself.
But last night we had a conversation that makes me absolutely sure she can't be AS.
She had been watching shows on the internet, and asked to watch one more. I told her she had to choose between the show and being read to in bed, exact words were "reading a chapter," since we're reading a long book and the norm is to read a chapter a night.
So once in bed she's says, "lets read."
I remind her of the deal.
She says the deal was a chapter, not a a "few pages."
We go round on that and I give in, and promise to read a "few pages."
But I decide it's time to have a talk with her about it, because certainly she knew or was capable of knowing what I meant. She says she didn't, but we talk more about the literal thing, and how we all have to be careful about it with her brother, which certainly she has observed, but that I consider her capable of knowing what I meant, and so I expect her to actively look for that, what I meant, and to act accordingly.
Her answer, "I can be literal, too."
"Yes, you CAN, but your brain doesn't FORCE you to."
"but it's looks like FUN!! !"
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Mom to an amazing young adult AS son, plus an also amazing non-AS daughter. Most likely part of the "Broader Autism Phenotype" (some traits).