Information on her cognitive abilities is good to have, and here the results say she's definitely gifted, so she's a quick study.
But since the question before you is whether to skip 2nd grade, in your place I'd be more interested in things that tell me whether she's ready for 3rd grade, and the WISC-IV doesn't have any bearing on that. What are the skills an incoming 3rd-grader is expected to have mastered? Of those, which ones has she mastered, and which do she need to work on? What could be done to close any indicated gaps?
And then there are all the social issues to consider. I second the recommendation to get the Iowa scale. It'll help you look at the implications of a grade skip from all angles.
