Scale problem

[axwielding1]

Some may remember my woes with my sumatran borgersmai, Lapar.. She got a belly burn from her undertank heating pad about a month or so ago... Her belly scales turned dark brown and scabby, and subsequently peeled off (not shed). After peeling off, her fresh scales were nice and pink, soft, for a few days, and then began turning brownish again.... After some time, they also came off... I've soaked her, and she's soaked herself. I've used plain Neosporin, I tried something I found in a pet store made with jojoba oil, and then the vet gave me silver sulfodine...
She shed a few days ago and everything came off, and she was fresh again.. Now the affected scales are turning brown again, even after the application of her treatment...
I'm obviously concerned as this can't go on much longer. I'm also wondering if this could be something else, like scale rot?
She's sweet as ever even though I can see she's uncomfortable..
Anyone have any thoughts? Different treatment? I've now laid a soft towel down for her to help keep her belly dry in case it is scale rot.The ambient humidity is still 80% though.
Any help would be greatly appreciated...
Thank you.
ax.