I am new to cure zone, but I would like to add my 2 cents. This is what worked for my mother. Two cups of organic Kefir or yogurt everyday, this should gently add the good probiotics to your friends system, with out the harsh die off. I believe Kefir is stronger than yogurt. Two cups of unsweetened cranberry juice everyday. Also, eat cherries. Cranberries and cherries will keep the bad bacteria from sticking to the bladder walls. Also, drink lots of water, to flush out the bad bacteria. Eat green salads everyday. You can add any raw veggie to the salad and use lemon and or raw vinegar with the mother and olive oil for salad dressing. This help my mother recover. Please let me know your friends result, if she try the suggestions.
Also, we use 365 (whole foods) 100% cranberry juice, its about $5.00 for 32oz and its unsweetened.