If she really has a UTI and doesn’t feel better within 48 hours with natural remedies she needs to either get a urine culture, start antibiotics, or both. There are many different antibiotics and if the ones she has tried before gave her bad side effects than she can try a different one.
I just wrote on another Q that natural remedies for UTI’s typically do not work and letting a UTI go for days and weeks can be very serious.
The normal script for a UTI is 5 days, she needs to suck it up and suffer for 5 days if she indeed has a UTI. She certainly can culture first and confirm it’s not just a simple irritation before taking medication.
40 years ago when I was a kid doctors over prescribed antibiotics for many different things including colds to prevent a secondary infection, which is ridiculous for the average person. Then there was this big push back and warnings of antibiotic resistance and some doctors and some people avoid antibiotics at all costs and try to wait illness out for weeks and months.
Here’s the thing; antibiotics are a miracle. Certain illnesses should be treated, take the miracle. A person can wait and see if their sinus infection gets better on it’s own for a week or two, but things like strep throat and cellulitis you have to take the drugs. UTI’s are pretty close to being in that category.
Some people say they get better with natural remedies for UTI’s and I guess it’s fine to try, but if there is blood on the tissue when she wipes, or if she has a fever age needs to take the drugs.
I’ll add that the studies I have read say that cranberry can help prevent UTI’s but not beat down an infection that has already taken hold. Moreover, cranberry can be irritating to the urinary tract, so it is counterproductive for some people. My our friend doesn’t want to drink it anyway, so as far as her situation it doesn’t matter anyway.