Agreed. The only mitigating factor is that she probably received hundreds of tips on the case, and it's tough to sift out the "good" ones. But when she met the guy face-to-face and was presented with his credentials, she should've taken some action.
If I were running the show, she would be reassigned to another less critical position given her lack of response.
..."If I were running the show, she would be reassigned to another less critical position given her lack of response.'
Like head mop and buffer tech.