He might've been able to shrug off hearing he had something of hers, if that was the only problem with the story. It was possible, it could make sense. The real pit of concern came with what she said after that. About him (and he believes her immediately if she's throwing accusations around like that, she isn't the type that'd do it without a reason), and about scratches.

The story is a little too convenient.

"What happened after she scratched you?" he asked, already having to keep his emotions in check. It wasn't hard to imagine a lot of bad outcomes to this.