instead of cranberry juice, which has too much sugar to be really helpful, have her get cranberry extract in liquid (most effective form) or in capsules. These will do a LOT more for the Urinary Tract Infection (UTI) than drinking gallons of juice would. The sugar in the juice counteracts the helpful effects of the cranberry. Also have her start taking a regular probiotic supplement. It doesn't have to be fancy, just an acidophilus supplement (keep in the fridge after opening) and it may actually help prevent future UTIs. She should take probiotics while on antibiotics because otherwise seh will end up with a yeast infection most likely. It can become a vicious circle - Urinary Tract Infection (UTI), antibiotics, yeast infection, antifungal, and around again.
I thought this was nonsense, but both my mom and I stopped having frequent UTIs once we started taking daily acidophilus during a Urinary Tract Infection (UTI) and stayed on it for several months. I don't know how it is all related, I just know that this, and using cranberry extract (either put drops on her tongue or in a dixie cup of plain water - NOT with anything with sugar in it) worked for both of us. The acidophilus also was a HUGE help with the stomach cramps, etc.... that came iwth my period each month.
What is she doing to prevent Urinary Tract Infection (UTI)'s? Does she know that peeing as soon as possible after sex is a HUGE help in preventing them? It is also super helpful to use plain water to clean off after she uses the toilet. When I got a lot of Urinary Tract Infection (UTI)'s, one doctor told me to keep a squirt bottle, like the ones used for condiments, and squirt myself off with warm water before I wiped when I urinated. Sounded kind of silly, but it worked. the doctor said it was okay to put a small amt of betadine in the water, but it wasn't necessary. Just either get a new bottle (don't recycle one from ketchup or anything with a lot of sugar in it - it is hard to get it all out and it makes a difference) or keep a bottle of plain saline for contact lenses handy. the saline is fine to use, and can be a lot easier if you are raw/sore down there.
If she usually gets yeast infections when she takes antibiotics, the doctor can give her diflucan to take when she starts them. It is one pill that will cure the infection - one pill and you are done. It works for at least a week. Yogurt is also helpful, but the most effective use is to apply plain yogurt to her privates, rather than to eat it. It is a LOT easier to take acidophilus, in my opinion, than to keep doing that. At least it was for me, esp when I lived in a dorm.
The whole thing about wiping front to back is helpful, but isn't that effective. The distance is small down there, and it is likely that your underwear will spread the bacteria/whatever anyway. This is one reason why using plain water is so helpful - it rinses you clean rather than just wiping it off and leaving some behind. She could use baby wipes, but the plain water is easier and some types of wipes, esp the fragranced ones, can HURT. So she should look for the most gentle, unscented ones she can find, or use saline or water on a gentle soft paper towel.
The cranberry extract is amazingly helpful. Also, there is a medication used to treat Urinary Tract Infection (UTI) pain that the doctor can rx. It isn't a substitute for antibiotics, but it can make a huge difference. It turns your urine orange though, so warn her. I freaked out the first time I used it because no one warned me. It looked like orange triaminic cough syrup - NOT what I expected!
I looked up the medication name - phenazopyridine (Pyridium) - and if she is allergic to sulfa she shouldn't take it. Otherwise it is a HUGE help - it stops the burn when you urinate. Not all docs, esp male ones, will think to offer it, so she should ask for it.