I searched key word gunslinger and got noting about what argument to go for?might well add traits but pretty sure it's acceptable and dodge on traits
Dodge is very good on her. She's also a good candidate for general talents that affect the whole battlefield, as her best outcome is surviving long enough to keep generating endless choppers. I'd suggest something like Cursed Battlefield or Malaise for an augment, and dodge or hitpoints for traits.
That's because, compared to her choppers, her own personal damage output is relatively unimportant. So she doesn't need an augment or traits to make her hit harder.