Only the surrealness of the moment kept Mai from returning the wave. Or smile right then, really, though she did spare a glance of acknowledgement Celestia's way before turning her eyes back up towards the roof.

And lightly tilting her head to one side.

"i see it." As she pondered over the countless possible explanation, though her peripheral vision, she noticed Trunks offering a hand. No doubt intending to bring her with him in his closer look. "Sure. It doesn't...seem like anyone else is around. And if it's some kind of trap, it would be a very stupid one to set."

Her only other fear was the weapon being some form of ayakashi in hiding.

(It wouldn't be the first time.)