Welcome.

Both the RIAS and the Nagliere tests are less than 30 minutes so I do not understand why the RIAS would have her more focused than the Nagliere. (Maybe I am missing something).

I would take a step back and think through why you want her in the gifted class for math if she is at grade level or 1 year above. Does the class work at grade level or above and if so, how much above. You would not want her in a class that she cannot be successful in.