Is she sexually active ? she could have been reinfected by her partner.
Humic Extract not a fan very pro oxidative .
She may want to try PEA/Palmitoylethanilimide for her pain, Alpha-llipoic acid may also be of use.. Herbs for neuralgic pain include SJW, Chuan Xiong, Prickly Ash, Sweet Melilot, and perhaps some Jamaica Dogwood or Corydalis.
I personally do not believe in the healing crisis, and I do not think the gut healing is likely to have anything to do with this.
Her tongue is white. That suggests cold, if the moss is heavy then cold/damp, but is the entire tongue white or just part of it ?
Yes, probiotics are fine and a vaginal probiotic is indicated. A vaginal suppository in a coconut oil/cocoa butter base with Tea Tree EO, Goldenseal, Usnea, Oregano, and Da Qing Ye/Isatis would be useful as well. I do not know of any commercial preparations like this although there might something similar. Really high grade Manuka honey with a few drops of EO of Lavender can also treat candidiasis but it is really messy.