While Alys has no qualms about dressing up in a variety of fancy styles, it's a safe bet that anything that would actually limit her movement is either easily removable or not actually as constraining as it looks. Or, more likely, both.
For casual clothing, she favors a set of red sashes, anchored to golden jewelry (torc, bracelets, belt, etc). It's not exactly armor - for one thing, it's far too skimpy - but the materials used are notably more durable than conventional cloth or actual gold would be. She often adds a heavy cloak, especially if she expects to be outdoors at all; it's easily removable, can be used as a makeshift shield, and keeps the cold out and the rain off.
Psyche: Unknown - nobody has tested her here yet.
Strength: Casually superhuman. (At least Mid Rank; strong enough to throw an ogre.)
Endurance: At least Amber Rank; she's been active for over 24 hours with no signs of fatigue.
Warfare: Dangerously competent, if you at all know what sorts of tells to look for. (At least Mid Ranked.)
Shapeshifting, including the ability to transform into what looks suspiciously like living flame - and pull off tricks based on that, like heating a metal item to the point where it glows just by touch.
Tinder, hell-hound. A large black dog with streaks of red around his muzzle and paws; has a tendency to curl up and nap in fires. Generally seems quite good-natured and friendly. Basic build is similar to this, and tends towards vocalisations like those of a basenji. (Seriously, go youtube "basenji"; they are... distinctive.)
Known powers include immunity to fire, teleportation (generally involving corners or fire), and the ability to establish mental contact by touch & deliver messages. As to whether or not he's sentient... it can be hard to tell; at a minimum he's as "sentient" as a particularly smart dolphin / raven / gorilla or the like (i.e. in that category of very smart animals that people wonder about) - but even with active mental contact, he doesn't think in terms of words or language; it's all smells and temperature and geometry. (Think, Hound of Tindalos, but with slightly less eldritch abomination, slightly more fire.)
- To start fires - even stone can burn if you know what you're doing... or have a bit of shadow magic on your side.
- To make actions look easy or graceful - Alystrakos moves with all the grace of a hunting cat, and makes about as much noise as one, too.
- To see the unseen - to the less perceptive, this might seem like a quirk when Alys occasionally stares off at nothing visible. But there's always something there, even if it might be just an abstract construct of non-corporeal energies.
- To act like royalty - sometimes this counts as a talent: she's very good at remembering names, faces, and political affiliations; tends to command instant obedience from servants, courtiers, and officials; and so on and so forth.
- Acts like royalty - and sometimes this counts as a quirk: she tends to stand out in a crowd of commoners, is polite even to people who'd take that as a sign of weakness, can be excessively condescending, etc.
- Green cat-like eyes - a shapeshifting tell; it's unclear if she can't alter her eyes... or just really really doesn't like to. Regardless, sunglasses (or the like) form a key component of any comprehensive disguise.
- Dislikes water - given the choice, she'll stay out of rain, snow, swimming pools, fords, etc. And reacts to a simple flick of water as if it were an attack. (...Ok, so that last bit shouldn't really be common knowledge yet. But it amused me too much to keep it out of her publicly visible character sheet. Take advantage of it at your own risk.)
- Obviously dangerous - unless she puts serious effort into suppressing it, she moves like the aforementioned hunting cat - which tends to put normal people on edge, even if they don't have enough warfare to consciously recognize the danger signs.
This counts as a talent (anticipating conspiracies, reacting to the pickpocket before he even sticks his hand into the bear trap that's in your backpack, etc.), and as a quirk (spending time searching for conspiracies that aren't actually there, annoy the honest merchant by detaining him long enough to verify that he isn't actually a thief, having a bear trap in your backpack in the first place, etc.) - though even in the latter case, Alys is quick enough to note that, why yes she is paranoid, and no, she's not actually expecting to find that you're trying to summon dark gods in your basement... but that certainly doesn't stop her from checking.