How does her expressive language disorder impact her? I only ask because there are so many different ways that it might - my ds12 has an expressive language disorder which obviously impacts his written expression, but I also find it seems to (I think) sometimes impact him with the tasks that might be associated with reading comprehension tests.
I'm not familiar with the MAP tests so can't help you there, but with the reading tests my ds has had over the years, he seems to be somewhat "losing" progress - he's progressing, but the percentile levels he tests at have gradually gone down over the years. With him, I suspect it's a combination of both how he's able to express his knowledge on the test combined with a bit of 2e-ness re the actual understanding of how to summarize or pull together what he's reading. He has some quirky behaviors when it comes to reading, even though he reads at an extremely high level and takes in very detailed information. It gets really difficult to tease out what's happening with kids who are so bright yet 2e.
Best wishes,
polarbear