If you suspect anything, get her tested. It's really the best thing for her. From what I understand with my DD's diagnosis, the official diagnosis is "ADHD" whether the hyperactivity presents or not; it's a big bucket to make it easier to understand.
Barring that, I haven't read about wobble boards or other methods of focus training; mine's 7 and benefits from medication, limited screen time, no food dye, and a full night's sleep. Fresh air, sunshine, and physical activity also seem to show benefits as well ... even something as silly as a random day living room dance party.
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Liz
DD (3/2010)
"Make mistakes! Get messy!" - Miss Frizzle