Ask your dd what's too hard about it. It turned out my dd found things too hard when we would call it too easy.
For example, when confronted with letters and their sounds after she'd been reading for couple of years, she complained it was too hard. When she gets too much repetition in math, it becomes too hard. Whatever level of work that makes her start to compartmentalize her brain so that she puts her brain on day dream while trying to accomplish her school work--that's when it becomes hard. Because she can no longer take anything in, turn it around in her brain and put out a thoughtful response. She can just deflect the work onto the paper, which results in As during the early years.
The other possibility of course is a 2E, especially if the GAI is the number reported.
Interesting I must bear that in mind.