What are some common ways to treat a UTI if someone cannot tolerate antibiotics?

I have a friend who has a UTI. I have asked about her a few times recently as she has suffered some trauma, become an hypochondriac, and is anxious, hostile and in general, unpleasant to be around. Anyway, long story short, she is saying she has a UTI but for some reasons she cannot tolerate antibiotics. She is convinced that since a UTI can become kidney trouble, she is going to die (this is how far she takes things mentally).

I am just curious, since the common way to treat a UTI is with antibiotics, how would it be treated if the person cannot tolerate antibiotics?

She says antibiotics cause her liver pain. Whether or not that’s actually true, I’m not sure, since she’s got a zillion ailments and it seems like the majority of them are in her mind.