[Dear Sonic, while Mary can't account for this within her own history there are some good arguments against messing with ancient tech without knowing what it will do from her home world. The 1755 Lisbon Earthquake for example.

Unaware of this massive future mistake on the part of the Assassins, Kidd continues to move with the group, keeping an eye on the button to make sure no one makes a lunge for it as they depart the room.

In a fairly obvious moment she's drawn to the observation deck first, going a bit closer to the edge than her present jobs are skilled at dealing with. She offers Sheena and Sephiroth a nod before looking out, taking in all of their surroundings. This is the highest view she's been able to get in this world from a structure and it brings back some memories of home. Mixing with the sight of the Calamity off in the distance she feels herself briefly overwhelmed but she keeps her footing.

She takes Sheena's leaving the overlook as her cue to do the same, following ]

Given what else we've seen in this tower I'd guess we're all thinking the same thing. The question is if it's worth the risk...

[She dislikes being so overly cautious, but there is a fine line between recklessness and bravery.]