she has a dragonification skill, and thus becomes more dragon-like while retaining a humanoid body. Though she's very much strong enough without it. And it requires her to wear some revealing gear (such as where the tail appears from).
Upon initially meeting Aria, she's quite scared. She knows Tama's strength (enough to kill her as a dragon) and assumes his master must be so strong that she subjugated even Tama. Thus she's quite obedient towards Aria (at first).
@KuroAnsatsu Oh, you meant that. Yeah, that will be awkward, but the heroine seems okay with mc doing that still in cat appearance. some chapter before she mentions it and if I'm right, she falls in love with Tiger who saved her in the past