That is too bad! We took our beagle to a groomer a year ago, and they cut her nail too short, but didn't tell me! I didn't notice until she was in my car leaving bloody paw prints all over my light grey interior.
We wrapped her foot in a towel and brought her to the vet, cause we didn't know what else to do. They used Qwik, and gave us some to take home. It really works!