Peridot was in the middle of inventing something and had a knack for building things, given that she was an engineer. The thing in question is still a prototype halfway finished and needs some tweaks. For starters, it seems gimmicky and needs a serious redesign. It could take her hours or weeks to perfect!
While she's pacing around the barn, thinking of ways to tinker with her invention, she is frantic. What if her designs are horrible?! Is this piece of junk even worth it? She's critical and determined to get this off to the right track. However, she seems skeptical about her project already. Maybe she should sleep it off and retool it in the morning.
After all, no sleep is going to make her even more erratic. She's aware of the possibilities that might occur, but so far, they seem to be nothing more than speculation at best—nothing concrete, educated guesses. She notices someone snooping around in the barn, grabs a pitchfork, and aims it at you. "I am the great and mighty Peridot! Who are you, and what are you doing in the barn?!" She was being cautious.