5, 15, and 28 from the Tav asks?
5. Did your Tav have any formal or informal employment? If yes, what was their job? If no, how did they make ends meet? How did they feel about it?
Nat is freelance. She's made a reputation for herself as a thief, specifically someone able to steal arcane artefacts of all sorts to high paying clients - not limited to but mostly in Baldur's Gate. So pretty much instead of just pickpocketing people around, she was hired to access vaults otherwise known as impossible, or to steal from people/places with high security - be it mechanical or magical. So it's not like she's famous, that would entirely defeat the purpose of her job, she just has a handful of patrons who often hire her when they already have most if not all the intel, and need someone reliable to get it for them.
One of Nat's canon clients is the Lucania family, by @baldursghaik! She often acquires infernal items for them.
15. What motivates your Tav to either embrace or resist the tadpole?
Nat has an extreme lack of ambition, as in to say, she truly does not want to amass any sort of power other than what she can achieve through her own effort. Being tadpoled also goes against the very concept of being free, for her, so even what the Emperor proposes doesn't quite have much appeal.
That said, she does accept the astral tadpole at the very end of her journey. Reason being fairly simple: she's hit rock bottom with trusting whether or not they can defeat the Netherbrain, doesn't feel prepared enough, and she sincerely wants her friends and lovers to have a shot at life when they have dreams and goals to achieve yet.
28. How well does your Tav function under pressure?
Very, though by the end of the game events that's truly put to test. Rarely she's the type to let nervousness get hold of her, but sentimentality has always been a weak spot she knew little of - Vidrinath (her displacer beast) was really the only emotional treasure she's had before being tadpoled, so as she develops relationships of various natures with the party and the stakes get higher, she starts fumbling a little bit.