Can you take a pic of her tooth and let us see it? Your pd's teeth from your description are now not level and will not grow properly, if one tooth is broken that will need to be levelled off? Leaving it as it is may well cause even more problems for your pd so you should do all you can to find a suitable vet - ring any vet and ask them for a recommendation?
I'm sure that if you contacted Jen with your worries about your pd, she will answer... she may well have a problem with you, I have no idea, but she won't have a problem with helping a prarie dog I'm sure?
Good luck and keep us updated.