If the dog is up on its shots, then you certainly have no worry about rabies. However, sometimes animal bites will get infected. I have the most experience with cat bites, which often become infected because cats have some really nasty bacteria in their mouths. I don’t know if dogs have the same critters in their mouths, though. he triple antibiotic ointment will generally take care of that problem, but if you notice the area of the bite become red and swollen, then you do need medical attention and more specific antibiotics.
If you do go to the doctor, the bite will be reported to local authorities so your neighbor will have to prove that the dog does have its shots up to date. They may also question the circumstances surrounding the bite and there is a risk the dog may be classified as dangerous.
Since this is the case, if you decide to go to the doctor because of the bite, and if you consider the neighbor a friend, you might want to let her know so she can make sure the vet paperwork is handy and so she can show that she has taken steps so that the dog cannot bite again..