Emma laughed at some light joke Xavier had just shared about unruly students. What she wanted to do was throw something. It was one thing to go after a group of vigilantes, but another entirely to house children in facilities of questionable safety. Xavier could probably pick up on Emma's indignation easily.
It was frustrating to know of something so corrupt and have little to do for it. Emma didn't want to out herself unless she had no other choice. She also didn't want to sit by idly and watch what was going on. What do you want from me, exactly, Charles?