"Ringworm" on my kitten?

Vet called today and said her culture came back negative... But we started her on an oral antifungal (griseofulvin - sp?) 2 weeks ago and that is, to my eyes, to be working great. I think I see short little furs growing back and no more red above her eye. Also, a spot started over her other eye right b4 she started taking the med but it never got worse and isn't red anymore. Her tail is the worst - ALL scales in one section where all her fur suddenly fell off b4 she started medicine (I panicked the morning I discovered that) but now I think there are furs pushing through part of it. I am so confused that the culture came back negative, but it looked like ringworm, the sites were fluorescent under the woods lamp, and now it is looking better after taking an antifungal for2 weeks? Does this condition sound like anything else you know of? I looked at pictures of mange and stuff it that looked way more disgusting than what she had. Could be a false negative too, who knows...