First, she died yesterday. So, I'm going to ask if my vet will necropsy.
I like your disclaimer.

Well, the vet was looking for the obvious culprits of parasites/bacteria (coccidia, and streptococcous?)
She was on Tylan off and on, when her bouts would happen. She'd perk up and get better, she'd be on probiotics & electrolytes for birds.
She wasn't eating anything, but was drinking so it would go in her water jsut like the tylan did. When she'd perk up she'd eat again.
I never fed scraps of food except cukes, tomato and lettuce. Otherwise, they got their own treats - i bought them their own peas, corn, lettuce & well, they'd share the kale with me .
I'm heartbroken over her loss. I feel like I really failed her.