La'Marri is sort of an isolated community where people live peacefully, away from politics, say. At a guess, I'd say Mavi doesn't get any merc-work IN the town, but has to go out for that sort of thing. That's assuming that that's the way you want to play it. For all I know, you want to start RPing at her initial arrival, which might be a good way to go.
For my part, I can help you out with local resident,
Keefe Zarla, who is {A} an assassin who goes out into the world to eliminate targets, {B} a Ferromancer (a practicioner in metallic magic arts), and {C} a ferret-type Beastkin (an animal in humanoid form). Living as one who commits violence
outside of La'Marri, she could give Mavi some pointers.