hi penny, small girls are often prone to urinary infections, but these episodes are usually few and without fever. Your daughter is having repeated upper urinary tract infection
which may be due to several causes for eg. reflux of urine, duplex kidney
due to which urine from one ureter moves back and forth to other ureter (yo-yo reflux), some hold-up in the urinary tract (which may be since birth) or simply a body predisposition to certain bacteria.
So one, she needs a thorough evaluation by a urologist
or a pediatric urologist to find the cause of infections. If she cant void during the special X-rays, the procedure can be done under anesthesia
and gentle pressure applied on lower abdomen to look for reflux.
Two, her kidneys need to be protected from further infection related damage, so she may require long-term low dose antibiotics to prevent infection. go see a urologist early.