My DS's WISC fsiq was also <130 with a GAI >145. When he later took the SB5, his FSIQ was >140. There is definitely a processing component to the SB5, but the tasks are very different from the WISC and were definitely more engaging for our DS who did much better on them than on the WISC tasks.
So I guess I can give you some hope that the score could go up if she took the SB5. You never know unless you try.
We were fortunate in that the IQ number never made a difference for GT programs. We would have been in your position if it had since his first FSIQ would not have made the cut. I feel for you.
