One of my pups owner's called saying that the pup has a urinary track infection. I did not see it, any ideas in your experience of what the problem might be?

I have one of my female puppies that is 10 weeks old and the owner has called me now a second time within 2 weeks saying that the pup has a urinary track infection, other then her having a tilted vagina (which the vet has not diagnosed) and I did not see either, any ideas in your experience of what the problem might be?

Thanks,
Monika