Is the teacher still picking on her?
Is she still demonstrating 'rage' at her classmates?
Is homeschooling an option?
how many hours a week is the gifted program that starts in 3rd grade?
What grade is she now? (age 5, right?)
I would play up the rage angle (her's not your's - humor alert)
and ask then for individualized IQ testing, and their whole battery of tests to find out why your little angle is raging. In otherwords, hang them by their own rope to get your free IQ test. It might not show her true self, but it most likely will.
Best Wishes,
Grinity