She has a lot of trouble with the "what is the main idea of this passage" questions. I suspect it's because she reads it and her mind goes wandering off about every sentence, and by the time she gets to that question, there are lots of other things in her head that weren't actually in the passage, and then (as Zen said) she writes down some little piece of what's going through her brain.
My DS5 is spectacularly bad at those, to the point that he is now getting 1:1 time with the school SLP to work on "summarizing" skills. I can't say yet whether it is helping.