Carol and Loki
Loki was staring at Carol while trying not to look shocked. She managed to turn that into an expression of keen interest, which was easy enough since she was interested in what Carol was saying. If it was a light engine, there was only one that could be used as an energy source. The one that was currently tucked away in her dimensional pocket. The one that Dr. Strange believed was locked in there, and that the key was Thor's verbal permission to use it.
"That sounds incredibly jarring and terrible, Carol. I'm so sorry. If I encounter or hear word of any Kree nearby, I will let you know immediately." To confirm her theory, she had to ask an innocent enough question, "Do you happen to know which stone it was that did this to you?"