como, I've never seen a case of demodectic mange that resulted in hives. Hives are generally a sign of allergic reaction. What is she eating? Maybe she's intolerant to something in her food...
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."