Thea shook her head a bit sadly- she was going to have to practice that a bit more. Like the other constables, she was wary. She waited a few minutes, long enough for Wally to reach his probable meeting point if they were as close as he indicated, and then she took a moment's time to prepare, casting a spell that might provide forewarning. As the spell took hold, she closed her eyes and focused her mind- her fellow constables would provide warning if it was needed.
OOC: Wait a few minutes- maybe five, long enough for Wally to meet his "friends". Then casting Detect Thoughts, and maintaining concentration on it, focusing the 60 foot cone in the direction in which Wally was headed- she will move to the front of the group (to avoid picking up their thoughts by accident), stiil in her orcish disguise. For up to 4 minutes, she can detect the presence or absence of thoughts in the area of effect- further focus upon those thoughts can provide more info. For now she is most concerned with whether anyone is coming from that direction, and whether Wally is alone when (or if) he returns.