Purple Library Guy posted:
I don't think she has autism. Autism has become both increasingly fashionable and, for unknown reasons, apparently increasingly common in the real world, so it's understandable that it's rather a "go-to" mental problem. But the way she acts doesn't seem autism-ish to me. I don't think her behaviour was unusually repetitive, or that she particularly had trouble grasping feelings, and in particular it didn't seem to me that she had the basic typical autism problem, trouble representing other people in her mind as being humans like her.
There are many different ways autism can manifest, what you described is just the typical way. Also a lot of people with high functioning autism have a lot less trouble grasping feelings and such than most people think. For many people with Asperger's syndrome, for example, it's a matter of overstimulation. Someone with AS is perfectly capable of learning normal social cues, for example, (and indeed most of them do learn at least some as they get older) but it's a matter of them having to learn how to filter out the extraneous information.
It's completely possible she could have some form of high functioning autism. And in my personal experience her actions aren't totally unexpected from an autistic person. Though they are more unexpected from a girl than a boy. Girls with high functioning autism actually commonly go undiagnosed because girls are, by nature, more social and so an autistic girl is going to end up adapting better than a boy.