Jean wasn't nearly as afraid as she probably should have been. Maybe it was the dreams, the visions of her as a hero named Marvel Girl, joining forces with others like her to help the world the best they could, but she simply wasn't afraid.
Overwhelmed might have been more accurate.
"... I was thinking of how I needed to put those away, when I saw them just there. And of how badly I wish I could... well, fly. Into space, like the launch." It sounded so stupid to say out loud, but she trusted John enough at this point to know that he would never tease her and most likely felt the same way.