I'll make this short and sweet.

As an anthro, and in this form, she is bloodthirsty, insane, 'mad, crazy, illusive, Never were you expect, nor were you don't expect. tricky, deviant, seclusive, a loner, greedy(dragon greed for shiny things of value), Scary, taunting, honest (i know shocking right? She doesn't lie at all) Mind f***er, Time controller, portal making/jumping. Teli-porting indestructible, kill everything she touches thing.

as a feral she's even worse.

As an anthro she is just more civil and tries to be well mannered and evenly tempered.
her fur can change to needles or acid to even a toxic gass. she can turn invisible. Blend in with everything. Especially the sky!

She can get hurt adn knocked out though. Just once she wakes up... Your world is dead...

Loves blood and gore

Has needle like teeth.
Wings are feather fur like.
Has a halo.

Can change eye and fur color.