My DD tested at 5.5 on a brief test, through school, with around 112. Thankfully her teacher knew gifted enough to say that further testing needed to be done.
She took a full test about a year later...the school process takes forever, and her full scale was almost 30 points higher with the verbal difference even higher.
I think that the brief tests do tend to be less accurate, but also that she was alot more mature in grade 1 than in K. In K she said the test was hard, in grade 1 she said the test was fun!
I think that very few kids under 5-6 have the maturity to score their best.
Give her some time to develop more and her score may likely be higher.
Wish you well no matter it turns out.