When Carol first got her powers, she was beyond out of control. She was a danger to everyone around her. An ordinary human was not ready for Kree DNA, and she had to re-learn how to do something as simple as shake hands or open a door. When she could pull a door off its hinges by accident or mean to jump a little and end up in the air. From day one, she liked to get in the mess of things. She had distance abilities, but there was simply nothing better suited for her than slamming enemies directly in the face.
Having someone else like that on the team was gratifying, and she offered America a strained smile when the younger woman came in. It was only then she really looked around and took in the damage she'd done and winced. It was sloppy, but she did feel better. There was no where else she could take it out on.
"Me," she admitted with a shrug. "Sorry, got here to vent, you can see how that went." Though by the looks of things America might have the same idea. Carol looked at her thoughtfully, realizing she was definitely not the only person having reactions to what happened. Maybe it wasn't personal for everyone, or maybe it was. Xavier was a figurehead. This would cause shock waves for the world. They might not know him as Charles, but they didn't need to. And her relationship with Xavier wasn't necessarily public.
"He was ... a friend. I spent some time with the X-Men some years back." Carol was never a part of the team, but there was a connection. There still was a connection. She was just too much of a coward to reconnect. If she tried, Charles would have forgiven and started over. She crossed arms against her chest in a self-soothing way.