Definitely true, but I'd expect a burn before the heat was enough to cause neurologic issues, especially since it was a UTH and not all-around heating. OP- Did she get burned when her UTH was unregulated?
I have a few BPs that just go through moods or are always quirky (with and without the spider gene). If it is neuro from overheating, there's nothing you can do. As long as she's eating well, etc., and doesn't seem overly stressed (extra jumpy, hissy, moving quickly toward hiding spaces) when handled, then I wouldn't be too concerned after double-checking husbandry. You could even treat her tub with PAM on the off chance that you just haven't found the mites that are bugging her yet.