Stop in for a cup of coffee

Vets best guess is chemical reaction from someone spraying yard and drifting the spray. We don't spray our yard so can't be from us. She is still rocking the cone of shame which is miserable for all of us. She can't use her doors so I become a door man. And sleeping is tuff as she still is determined to snuggle with me at night. Nothing says wake up like getting bonked in the head by her cone.
Check her feet.
Our pooch had something similar last couple summers. Never got near that bad, cause wife caught it early. Vet had her shampooing with special stuff and some meds. Kept it minimal but not gone. A couple months ago she noticed some yellow stuff on her paws. Turns out it was yeast and vet said that was likely her skin problem too. She has been keeping paws clean and so far no raw patches this year.