Whoops...busted. This would normally be the part where Gaige would throw down a grenade, or have her killer robot appear to give her time to scramble for cover.

Lacking either of those items she decides to take the bait Betty is offering.

"Y-yeah! Totally like that when I got here. I was just trying to fix it. I'm a Mechromancer after all, fixing broken or dead machines is my business!" She declares hoping that anyone listening will buy it. Or at the very least that she didn't just throw herself deeper into a trap.