Anything that has a time component (reading, writing, academic fluency), you see much lower scores. While they are still in the "average" range, they are MUCH lower than overall cognition - especially compared to the GAI. This is sure to cause frustration, doubt, fatigue.
A 504 will help by providing accommodations. But, at age 12, I wonder if you would consider remediation, to see if you could actually help her increase fluency in the area of reading and math? I also notice relatively low working memory scores. She would probably benefit from help learning to study and approach school work to overcome these deficits. I am especially concerned about HS and college when the volume of information increases - she will be slower getting through it (fluency), and may not be able to access/recall it very well if she doesn't know how to get it to her long term memory.