You know, the whole scarlet fever thing is confusing to me, because some sources will say that scarlet fever is a "complication" of strep, as in, if strep goes untreated, this can happen. Then other sources say that it is simply "strep with a rash", and no different than regular strep. From everything I have read, I think it is the latter.
Both my kids had strep this past winter, and my older one was not that sick. he had a higher fever for maybe a day or two, but then the rest of the week he just had a low-grade fever. He did not even really have much of a sore throat, and I would never have even guessed he had strep if it hadn't been for my 3 yr old having much more classic signs of it. The 3 yr old had sudden high fever, vomiting at the beginning, very sore throat to the point where it hurt to swallow (liquid, but not food, strangely). And he had the classic "strep rash". So, was this scarlet fever? Yes. The rash started literally within hours of when he first got sick. Within that first day. Apparently there are just certain strains that are apt to cause the rach, but still not everyone will get the rash.
I looked at your pics and I am trying to remember if that is what the rash looked like. Although it's only been 3 or 4 months, I just can't remember. I think it was probably similar to that though. I remember it being fairly faint though. I think it can be different with every individual. If she does still have strep, it does sound like it is more atypical, and it is dragging out. Could there be some reason her body wouldn't mount a big immune response to it? Has she had other things that would impair her immune system? I mean, with my 3 yr old, his reponse was sudden, high fever, like up to 104 that first day, then it stayed pretty high, sore throat, etc, and it took about 4 days before he started to get better. We did wind up giving abx, in part because it seemed like it was stretching on for my older son. He started getting bumps on his face that were related to the strep. I waited to give the abx to both. The research says that as long as you give it within 10 days, it has the same effect on reducing the risk of rheumatic fever.
Before the abx we were doing homeopathy and lots of natural supplements and remedies that were definitely helping.
I really feel for you. I did not want to give abx to my child, and I got a lot of support here, but pressure from elsewhere to do it. Even now I wish I hadn't, because his bowels have not been the same since. On the other hand, I feel your dilemma. It is a very tough choice. I had one child who seemed to be fighting it off and one who seemed to be dragging it out.
It is odd that she does not have a fever. Do you have a natural health care practitioner that you feel good about consulting? I was using a homeopathic MD. Does she have a sore throat at all?