The electric trap was placed upon the container that the core was set inside.

[She hesitated a bit-]

Under less diplomatic circumstances, I would have attempted to search for traps first, but I admit I had... let my guard down. For that matter, the trap was not triggered until well after the container was opened. Perhaps it was remotely triggered.

[... from there, she continues to describe the series of events from her perspective ((y-you can read the thread for a refresher or something right XD;; ))]