"I might just build a spaceship, you don't know!"

Is something the little girl said to Fury.
"He doesn't!" added Captain Marvel.

Did this dialogue mean anything? It seemed out of place somehow...like maybe a bit of foreshadowing or something.
Did this go anywhere? Or was it just a throw-away line?

Again, just stood out as seeming out of place, and its not often that dialogue raises an eyebrow like that. Just curious.