Thanks everyone. I think I'm going to go the herbal route with her ear fungus infection with some infused oils. I'm a bit wary about giving her borax or Iodine in her water as she's had some kidney issues in the past and don't want to complicate things with toxins she cant handle. This is a tricky one because I want to clear her from the fungus while still treading as lightly as possible with her kidneys. Should've mentioned this in the OP.
Any thoughts, please share. Most obliged for your help.