Thank for all the responses! I really love this site.
As my husband was cleaning her wound, he felt something hard and pulled out a nail! My poor Shades. When I took her to the vet last month for a check up, one of the technician realized she was missing a nail. Mystery solved~ looks like she must have lost it scratching her ears. We have an appointment with the vet on Thursday since he is closed for the holiday. (The buns always have perfect timing don't they? :? )
In the meantime, do you think it's safe to keep applying Neosporin on the wound until we get her to the vet on Thurs?