Faith failed to meet the check-in protocol. While Peter has been unable to get a definite lock on her, she is still in this city despite other disappearances that are continuing.
We need to know who was the last to see her and where she may have been.
EDITED: Sam Winchester has gone missing as well, same here-but-no-lock circumstances, thought likely to have been with Faith. Same as above, anyone who was the last to see him or know where he would have been, speak up.
[Gabriel]I need you to crack any filters she may have used with that fire-happy princess, especially recently.