2 month old female has fever and UTI. She's otherwise healthy and clinically non-toxic. Okay for discharge? If so, which antibiotic?

Oral antibiotics are appropriate in children older than 1 month who have had a first febrile UTI and are non-toxic and can tolerate PO. 

IV antibiotics and admission to the hospital for febrile UTI should be considered for children less than 1 month of age and those who are toxic or can't tolerate PO.

Antibiotic Options.  Click to enlarge.

Source

Montini, G. et al.  "Febrile Urinary Tract Infections in Children"  N Engl J Med.  2011.