I wish I had never posted anything about this:') You can still see the area and it's tender but it's closing up. If you steped on a nail you aren't going to have the same size opening the next day. Maybe she didn't need the second tetanus or treatment but my trainer felt I needed to keep it clean and apply ABT cream a few days since it was so close to her eye and the vet wanted her to have a booster so she got it.
And whatever caused it, it needs to be treated and kept clean, and the creme will keep it open I think to heal from the inside out.
You won't ever be sorry if you error on the side of cautiousness.
Sorry to make you feel bad for posting it, that wasn't my intent... it's just that we can't see anything in the picture to make an observation about.