There is a short version, called the WASI or WASI-II, but if they said WISC, it is doubtful that the short version is involved.
I usually tell children that the testing helps us to understand how they learn best, so that schools and teachers can teach them in a way that is more suited to the way they learn. This, BTW, has value whether or not she is ultimately enrolled in the GT program.
The core of the test is administered the same way to every child, but examiners can make clinical decisions about substituting certain subtests (such as when there is reason to believe that the standard subtest is not a good reflection of the child's ability, or the subtest is otherwise "spoiled" by nonstandard conditions). The main index score that you will certainly receive is the FSIQ, which is the global measure. You should also receive the VCI, PRI, WMI, PSI (or VCI, VSI, FRI, if the WISC-V). There are also two alternative index scores that can be calculated--one easily, and one only with access to more obscure tables. The GAI would be the one which any examiner can calculate, and the one most likely to be of interest for GT purposes. This is a combination of the VCI & PRI (or VCI, VSI, FRI). (The CPI is used less often, as it needs separate tables.) The WISC-V has many more options for ancillary index scores outside of the core subtests, in addition to the GAI: WMI, PSI, NVI, CPI, QRI, AWMI. A handful of pre-reading related index scores are also available, but not likely to be administered in this case. The WMI and PSI used to be included automatically, but no longer are, on the -V, as only one WM and one PS subtest are needed for the FSIQ.
I expect this is very confusing. The bottom line is, you really want: FSIQ, GAI, VCI, PRI (or VSI, FRI). The others will be of interest mainly if they are discrepant from these. You can describe these as the IQ and all available index scores, including the GAI.
