Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Most accurate- FSIQ, GAI, GAI with extended norms?

.....My mom seriously wants to know.
So what is DD's real IQ from the WISC DD took. The FSIQ that was brought down by low, though still high average, processing speed and working memory, or the GAI that was calculated to be 160....or when you add in extended scoring and the GAI shoots up to 180. I was trying to explain all this to my mom's. We were at her house when we got the results, and just wanted a simple number...but I wasn't sure what to say since her FSIQ was pulled down by WM and Processing that were both at 2 SDs below her other scores. So I say the GAI would be the most "accurate" or what to say so to speak, Your thoughts on how to explained things like this with so many numbers Help!