The webcomic Last Res0rt has an autistic character, though I guess she plays slightly into the "quirky genius" stereotype. She's very much a character beyond her diagnosis though, so there's that.
(I thought, you might like to know, since you’re writing an autistic female character, and this is a comic about a futuristic world. Though now I think of it they don’t really delve into it too much, so it might not actually be helpful.)
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Interesting. I might check it out regardless, at least to see what it’s like. One of the best things a writer can do for their craft is to read, and to read all kinds of things.