Check out this picture of Gwen's leg from a few weeks ago:
See that black line that's running down the middle of the wound there? I think that might have been the culprit in Gwen's last infection.
Check out how the wound looks now after taking Wolfie's advice and putting polysporin on it:
See where it's raw looking in the middle there? That's right where the black line was. I put polysporin on it the night I saw it was infected. The next day when I went to put more on that black bit sloughed off, under it her leg was raw and bloody. Obviously that black bit was an ominous sign that I wasn't paying close enough attention to. Hindsight is 20/20 they always say.
Anyway, I'm paying attention to it now, so hopefully her leg can get busy healing again!