Sketchy follow-up to another deviation of mine: [link]
I'm aware Daria is out of character here, and my defense is that I don't care.
Anyway, the exploit she speaks of is that there is a unique gun in Fallout 3 that a character will give you if you find and show her the right thing. It turns out, however, that it's NOT so unique, because it's possible to get her to give you an unlimited number of them (complete with some ammo). It's a powerful exploit because it can completely break the game's economy, which can diminish or increase the fun depending on how you like to play.
Jane's dressed in the Merc Adventurer outfit, and as for who Jane is in the this image, well, um... See, I was trying to figure out which companion was best fit to be Jane's double, and the criteria was basically a constant companion who wasn't concerned with karma or payment, and the companion who fit that description, well... Let's just say that collar isn't standard for the Merc Adventurer outfit