Charis,
Kennel cough is nearly NEVER fatal and does run its course. Like others mentioned it is just a big pain in the butt. It is more prevalent in younger dogs, (even the vaccination can CAUSE the disease in puppies that are younger than 6 months).
They best option is to vaccinate her the minute she is felling well again and continue to vaccinate as often as your vet recommends.
Many people make the mistake to not vaccinate there animals because "they are never boarded in a kennel." But if your dog comes in contact with other dogs in the neighborhood or at the dog park, or you take them to a groomer or any other place dogs are prevalent (even Petco), your dog is at risk.
Love and Luck,
Jenna