Context: She stopped in the middle of an alley , looking up to the rooftops but still not finding where he 'd gone . Cady 's brow furrowed and she glanced back to find the wolf right behind her . She smiled at him and let her hand fall to his back .

Question: What is she trying to do with her hand ?
Options:
0. None of the above choices .
1. Hammer fist the wolf
2. Grab its collar
3. Pet the wolf calmly
Answer: 3