Sean looks over at her for a split second, and it proves to be one of his biggest mistakes of the night, which is saying something. If anything is going to prove to be his undoing here, make him finally crack, it's the look he finds in her eyes, cutting through the darkness. Shifting his gaze immediately down to the ground, something like fear making his heart leap into his throat, he struggles for an answer to what is essentially a really simple question. Hell, a year ago, he could have written whole books about why he'd done it, and now it seems that the task of finding a way to sum it up leaves him short of breath.

"I- revenge, I s'pose," he mumbles after a moment, feeling more lost than ever. "She hurt me. Bad. She was the reason I wasnae-" and here he cuts himself off, shaking his head vigorously. Is that it? She hurt him? She hurt him at a very inopportune time? Was he honestly about to kill someone over a matter that petty?

"No good reason," he finally admits, staring sadly at the disk in his hand like that's going to magically imbue it with meaning. It may have provided a decent excuse for his actions back home to his superiors, but here it's no help at all. "I jus' wanted blood."