Hi newmom21C, good to see you again! I don't have a lot to suggest. It sounds like this is partly just her natural personality, and something that you'll be working with over the long term. One thought is to catch opportunities to praise hard work and persistence, and minimize any talk about what she's "good at." This is subtly different from just talking to her about the need for practice. It changes the reward-structure. Paradoxically, you (and the school) should stay away from reassuring her that she's actually good at things.
The school talking about different abilities may still put too much focus on an idea of innate ability.
Can the boredom in school be addressed separately? If that could be improved, it seems like the school is a really good one.