there is a video of this glitch on youtube as well, she goes back to normal after a certain part of the university level.

I played alone, all I used was a high powered corrosive sniper and a three-way hulk shotgun. Took me forever because I was hiding over where there is a waterfall with a bench and 2 ammo boxes on each side of it.

Wow, I didn't realize the comparison until afterwards when I beat this side quest lol. I mean. "splinter", "pizza", the sewers, even the 4 guys talked like the turtles.