Yeah, though in the post-Dark Reign Avengers comics, Mockingbird was given an experimental hybrid of the Super-Soldier Serum and Infinity Formula to save her from fatal wounds, so she at least has super-soldier levels of fighting ability now. As for Squirrel Girl, Al Ewing's New Avengers pokes fun at this a bit, saying she got tested by her doctor and is "medically and legally distinct from a mutant."
The spider is always on the hunt.