Glad to hear there is no UTI. Want to mention you should never vaccinate unless the dog is 100% healthy. I would not vaccinate a dog with a UTI. Should also not vaccinate when in heat.
I would get your pup on crancaps to help prevent UTIs till her first heat can correct her RV. Not all dogs with RV will have constant UTIs (some never have any)
See this info on RVs
Recessed/Inverted/Hooded Vulvas and Chronic Infections | Hearty Pet Talkin' Tails Blog