Is she open to homeschooling? What state is she in? She's certainly welcome to contact me.
Sounds like the "school day" was somehow rigged and/or the teachers didn't know what to look for. Gifted kids are often introverts, but teachers - like the entire human race - are instinctively drawn to extroverts. When observers see a classroom full of kindergarteners, they're looking for the kids who are able to read simple books aloud. If a child is sitting alone, quiet, and turning pages without reading, they "must" be looking at the pictures, right? Not if the child has already transitioned to quick, silent reading and is bored to tears with the book offerings in a K classroom! A bored child will usually not appear gifted during a random assessment, because they're not motivated to do circus tricks.
Tell her to read the book called "
Academic Advocacy..." It talks about this oversight in gifted identification.