"non reactive" means no antibodies to HIV have been found in the blood. The blood is HIV negative
If the risk (if there was even one) was more than 3 months before drawing the blood probe, then she is 100% not infected with HIV. (This is the so called window period).
call the testing center where you did the test to get an explanation of the meaning of the results in your case. cheers.
You may wan to go to the HIV forum is you have any additional questions. This forum deals primarily with hepatitis C
Trinity