I really do see our NPC, Tymora, as a cleric, and I'm not just saying it because we don't have one in the party. Reading over the City Domain, it seems perfect that the person who finds us work would be someone that has a connection to the workings of the city itself and the people within. I can see Tymora as being a bit neutral in regards to laws, preferring to help the common citizenry with their needs, with little regard to whether or not it's legal. I also see her as good, at least up to a certain point.
I don't see her as a combatant. She'd be proficient enough in a sidearm to defend herself and can drive, but she'd leave the wetwork to the PCs. Not sure what skills would count for being able to repair vehicles and machinery, but repairs seems akin to healing so the Cleric role fits nicely there, too.
Tymora would be like our team mom. Not in the sense of telling us to wash behind our ears or making sure we eat our veggies, but rather like someone that works to keep the team together and functioning cohesively. She could have been the one that brought the team together, whether through online or in-person recruitment. At least that way, we all share a bond.
Maybe she doesn't always meet face-to-face with prospective clients, and gets work through anonymous message boards. Or, she does have face-to-face meetings, which could range from back-alley rendezvous, slipped notes at a bar, or a small room separated by a barrier like a confessional. Perhaps she brings Kessel or Mack to these meetings as backup.
She might even leave out a plate of oranges for us when we get back from work.