There are people with Mosaic Down Syndrome, who tend to score a lot better on IQ tests. I think in rare cases they can get to 85 and above, which is within the normal range. I guess she would be in that category.
I mean, a lot of people with Down Syndrome are incoherent, barely understandable (or not even able to talk at all) and can't read or write. It seems rather implausible she is among those. You can't really vote on laws you can't read or understand.
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