Just out of curiosity, what did her WISC score distribution look like (subtest scores)? Was it even across subtests or did she have highs and relative lows? I'm not familiar with the OLSAT so I don't know what types of categories it tests.. but it might be that the OLSAT is limited in scope and if your dd has patterns of strengths and relative "weak" areas on the WISC, what you're seeing in the OLSAT is that what the OLSAT assesses isn't her area of strength.
If the OLSAT score isn't keeping her out of a program you'd like to have her in, I wouldn't worry about it and wouldn't spend any time even ever thinking about it. I'd trust the WISC results.
Best wishes,
polarbear
ps - I'm not sure what your ds' second "e" is, but I wonder if your dd might also have a second, possibly related "e" that's not been diagnosed yet?
Last edited by polarbear; 04/30/15 07:48 AM.