At a quick glance :
Black hair(s), almond shaped green eyes shining with intelligence when they're not closed.

This is a very clean and well groomed feline, who's hair(s) are silken soft (except if you catch her when she was just hunting some mouse or exercising herself, playing).

There's something weird with that "animal" though, because she has piercings. Several rings atop of her right ear and an "obital barbell" in her left ear. There's also a ring in this cat's lower lip. And it doesn't seem to disturb her very much.
Sometime there can even be a pair of glasses atop of its little nuzzle !

For the rest, I could describe her shapely legs and well defined thighs, slender limbs and cute little mitts but, refer mostly to what you see...

For more perceptive people :
Druids and Rangers will notice at once there's something wrong with this cat, because she has an extremely developped body language. She struts around like a Princess.
(Let me know if you try using animal empathy on her).

Arcane users could easily think she's a wandering familiar, or one waiting to be bound, somehow, because she has a pretty strong magical aura. Yet, witches pets usually have yellow eyes, not green ones.

Truesight shows her as she is. Nothing different than what you're seeing, but it would sure allow you to notice that feline is a magic user, not just a focus.
Strong Spellcraft analysis would allow to identify pretty strong ties to Illusions, Necromancy, Transmutation...

Some OOC additions :
Yes, she can talk. No, you wouldn't guess it before she tells you "...repeat after me. Moon Prism Power, Make Up !"

(WIP ! come back later !)

As for lights and stuff :

Greenlights mostly revolve around Bondage and Non-consensual IC stuff. Mmmh... Creativity and overall anything fun. Oh, Coherence too, are greatly appreciated.
I Love some particular form of "Realism" or "Logic" in our fantasy world, altho if you present things in a fun and coherent way, I might just go along.
A warning tho, She's rather fiesty and -will- resist.

Reds are kinda hard to define for me as I might pretty much go along with anything if it's well brought in and the mood is there, nonetheless if it's too brutal to be fun for me, Gore for the sake of it, Pain for sheer sadistic torture, I might ask to shorten things up or simply stop. Oh, mmh, Mind Control too, is something I'm usually really not fond of. Otherwise, apply server rules.

''Bend it, don't break it, be responsible.''