I am so sorry for not replying sooner. I hope your daughter has recovered. For the prevention of UTI's cranberry juice should be taken daily. Also ensure that she empties her bladder as soon as she feels the sensation to urinate. Drink lots of water - 30ml per kg body weight, preferably avoid ice or refrigerated water. Every 2 weeks give her some citrosoda. She should only wear plain cotton underwear. Tissue salt No 9 and 10 can be used for prevention and No 4 will help to resolve inflammation if the problem recurs