1. Can't hurt to ask, especially if you need the advocacy/support resources.
2. Keep in mind that reading is made up of both decoding skills and comprehension. Once you reach fluent decoding, there is a hard ceiling on how high your score can go. Her decoding and encoding skills are high enough that there is likely little space to develop (beyond about the mid high school level in reading (and phonetic decoding tops out even earlier, late in middle school)). A highly-capable decoder of this age is usually limited on decoding scores by her vocabulary and experience, rather than her actual decoding skills. Comprehension is another matter. If you look at her reading comprehension, that is among her highest scores (along with math computation, written expression, and oral expression), which is a pattern of personal strength in higher-level language skills that is consistent with your anecdotal observations, as the only non-language score among them is calculations, rather than math reasoning.
