Other than the word being "Arya", the only other word that might possibly turn this hoarde aside would be if they had said "Sandor" or "Hound". I think that she could have possibly said his name, hoping that they would be curious as to why, especially in light of the fact, that he is presumed dead by some and seen riding about the area with his helmet on by other reports.(We know who was wearing it.)
When she returned to Jaime, it is possible that in all honesty she needed his help to get the girl back. I just can't see her being a traitor to herself and all that she believes. She still wanted to fulfill the oath to Catelyn, in the return of her daughter, and also to stand good for the one between herself and Jaime.
Edited by Xray the Enforcer, 30 September 2011 - 05:06 AM.