Well, Mason would ask that she keeps her grenades in check. Our mission objectives are usually low-casualty (often no-casualty), professional work. On the other hand, being able to handle the big fights is a critical factor, so when Mason learns about her, he will have little fear that she can handle the latter, its the former that he might see as a challenge.
GARY
I need your GM'ing for this. Mason is working his contacts to find people like her, so this would definately be a viable option. He has been focused on using Lucy, Oakley, Cancer, Swarm, Victor, Phillip Gunderson, Shannon Outkirk, Doc Robot, and Shitstain to find talent. I would not use any of my other contacts (especially Vaughn) for this. The reason I would not use Vaughn is that I am looking to do my own homework, and even though I personally know that the characters are likely safe (because they are players in the game), Mason would have concerns for who any specific runners would really be working for.
The reason I want to do this correctly is for the story. Sure, we could just say, "this is my character, so this is who I want to play," but that is a missed opportunity for some really great roleplaying.