I agree with others not to worry about irreparable harm. I'm sure if she's getting As, she'll be put in the honors classes at the middle school.
I do like MAP tests as a measure of growth, but sometimes a kid has a bad day or the computer glitches or any number of reasons could cause one of the measures not to go up. I would ask for a meeting with the teacher and maybe the principal to discuss it, though. And I would tell them I'm concerned about why she seems to not be showing growth this year and wonder if there's anything happening in the classroom. Maybe you need to switch teachers?
But I think happiness is key. If she's found friends, is making good grades and shows growth overall, I'd try to sit tight.
