Wow, I'm sorry.
Birds can be so hard; I used to raise finches and chickens, and out of all of them that became ill/injured, I was only ever able to save one. She had a broken leg, so it wasn't something she could keep hidden from us.

I'm sorry, I don't think there's really anything I can say or do to help. I wish I could send you a good lawyer, it sounds like your family needs one.:(