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If she is having UTI and took some antibiotic result of culture may come like this which is insignificant and other possibility is sample contamination.
If she has fever
and urinary burning and frequency she needs treatment with urinary specific antibiotics and plenty of fluid to keep urinary tract
A repeat urine test is required to check infection is cleared or not.
You must visit a Physician/Gynecologist to examine and prescribe accordingly and if required Abdominal ultra sonography
may be done to rule out causes like kidney
Please take care