If there's only one Mod you do for this event, get her. Her upgrade is quite comprehensive and turns her from finnicky and awful to legitimately one of the strongest ARs in the game. Also, she has a secondary tank mode that in 99% of cases, wont come up, but is actually ridiculously strong if it does (of course, it comes up for some things like Theater). Note that M4 and STAR don't count as DEFY anymore.

Still gets outshined by clever little tricks in the story though, because she's still dumb like a gorilla.