Hi, I had gone through your question and understand your concerns. Her ketones are not cause to be very worried,because it was due her UTI(pyelonephritis). She may easily get back to normal range after antibiotic therapy(usually 3 days of ceftriaxon, then cefixime for 4 days, then uroantiseptics-for 2 months)and oral or intravenous rehydration. I would suggest you to keep your baby hydrated with plenty of water and follow to hypouricosuric diet(avoid chocolate,peas,beans,radjma,dal,market juices,junk food,radish,beet,etc.),because there are lots of uric acid,which can accumulate and cause ketones and cyclic vomiting. After antibiotic therapy probiotics(Darolac, Visilac 1 capsule once a day for 1 month) for normal flora, because disbiosis will cause disbiosis Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you and your daughter good health.