This is my Neeka!
Since she's a demon she's naturally fire proof. Yet, since she's spent all her life in hell and just recently was released, she much prefers the soothing calm of water; be it lakes or oceans, rivers or a bath, the only body of water she won't go near is a public pool (ew).
Being demonic her job entailed her to do a lot of sneaking around and causing chaos so she was naturally a shape-shifter. Her horns morph and change just like the rest of her, but it is the only part that will not disappear when in another form. Her nose spikes can change into piercings in some forms but there are always four. She does maintain her purple coloring no matter the form she takes unless it's human and then it's only in her hair.
Examples of horns from reference:
1) when she's super pissed off
2) when her interest is peeked
3) calm and at rest
4) demonic horns ;) super mischievous
5) shy
6) curious
7) drunk or causing chaos/having fun

I used a free reference sheet base from ajna http://www.furaffinity.net/user/ajna/

Here is her patern http://www.furaffinity.net/view/6695610/ male feline version
and her female canine version http://www.srstudios.org/art/free/r.....malecanine.png