Sorry to hear about the update, I hope everything goes well. ):
As for the wound, there's a mare at my barn that had something similar. My vet called it a summer sore and said it was infected with microscopic worms. Or something along that line. He lanced the large part off and gave her antibiotics to apply to the wound. He also had her worm the horse every week with Ivermectin to kill off the worm things. The wound is almost completely healed and it's been about 7-8 weeks now? Just food for thought.
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