Sure the Avengers could handle themselves, but the school? The students? They were kids. Kids who were still learning to control their powers, kids who needed space to learn and to grow. They did not need this. They did not need to grow up with the fear as Raven had. She would not let them, and would do her best to keep them safe. Maybe not in the most agreeable way, but she knew what she was doing.
Breaking into the one and only S.H.I.E.L.D.
Which, Raven did seamlessly. This wasn’t the first time she broke into a place like this, and it surely wouldn’t be the last. Plus she was mostly all healed by now that she did not walk with any notable changes to draw attention to herself. [Such as a limp, favouring one foot over the other, so on] No one noticed, no one thought otherwise. At least, till Raven pretty much got caught red handed as she waiting for a file to open on a computer. There was always that one risk of shapeshifting, when one walked into their double..