It is always good to check out potential supplementation and I can assure you that I would definitely recommend the kids probiotic from micobz for children, for your daughter. This is to counteract the effects of taking many antibiotics, which deplete the natural diversity of microbes and weaken the immune system. I would also recommend D-mannose plus from Cytoplan which is tasteless and a powder to mix into water or juice to help with the UTIs.