I think the psych's narrative and clinical observations have the potential to be even more important to properly understanding her scores than usual. There is quite a bit of diversity, both between and within indices, affecting pretty much every index.
One pattern of note is that she appears to do better with the abstract reasoning tasks than with the more concrete tasks within VCI and PRI (which are the reasoning-heavy indices that contribute to the GAI). For example, she did best on the most abstract verbal reasoning task (Si), and well, but less so, on the more concrete verbal tasks. Likewise, she did better on the two conceptual tasks in PRI, and not as well on the concrete task (BD). Although there is generally less reasoning on the CPI indices, the pattern appears to hold there. In WMI, her best performance was on the task that includes a little mathematical reasoning (Ar), while the rote memory tasks were not as strong. (Both PSI subtests are measures of mostly rote speed, with negligible abstraction, but even there, she did better on the one that is more amenable to strategies involving memory and learning (Cd).)
If we hypothesize that there is a gap between her ability to grasp high-level concepts and her ability to implement them in concrete applications, then it becomes not quite as surprising that she is achieving at the level of her concrete applications, rather than her abstract-conceptual reasoning. In particular, her isolated working memory (meaning, when the task does not allow as much cognitive compensation) is quite average, in contrast to her exceptional verbal reasoning, which has the potential for limiting the amount of data that she can process at once. One can easily imagine that she becomes frustrated when her working memory (often likened to the whiteboard of the mind) runs out of space to hold all the components on which she feels that she should be able to exercise her problem-solving and reasoning capacities.
Think of it this way: It is very possible that tasks that fit into her working memory are not sufficiently challenging for her abstract thinking, but tasks that are appropriate to her conceptual thinking ability require managing too many components for her working memory. So most tasks would then be both too easy and too hard for her at the same time.
