Thanks for writing in,
It is very likely that what you are describing is razor burn. WHat I would do, is if you haven't already bathed her go ahead and do this with a very mild soap being very careful not to scrub this area. Use very cool water, this will help to decrease the inflammation in her skin. If she is itchy you can give her some benedryl at 1mg/pound and also apply a hydrocortisone cream to the affected area. Be sure that she doesn't lick this off. Consuming a LARGE amount of this can cause some problems, but if she licks alittle bit then there won't be any problems. If this continues for a few days then be sure to take her to the vet as they will be able to give you additional medications to relieve her symptoms. I hope this helps her to feel better. Take care!
Dog Veterinarian
Veterinarian, Dog/Cat Veterinarian