Oh my gosh I'm really sorry. I'm glad you found a proper vet and maybe you should call the other one and give him a piece of your mind. I know that wouldn't help, but remember it's not your fault you tried your best to do everything you could for her. You didn't know. Your not a vet. I hope everything works out and it's not the latter iof the 2 suggestions on what might be the problem. Is she still in pain or are the meds working to kill the pain? I'm really very sorry. Give her a hug for me... Is the mange contagious? Keep giving that sweet baby lotsa love she's been through a lot in her short life and please don't blame yourself your doing the best you can. Keep me updated
Jodie