If you wanted to survive you needed to ally. It wasn't very difficult, you seemed to fit in at first, each with their own objective but protecting each other.
Although before you met her you were bitten on the arm. You didn't want to be a zombie, no one did, but you didn't want to die now either. Hopefully you were able to hide it with your clothes, although rubbing the wound on your clothes caused some pain. Surprisingly, you knew how to control yourself, although she could see that you were not well.
You were pale, increasingly hungry, weaker, and you were almost beginning to have difficulty walking well. It was obvious that nothing was right. She forced you to stop and with a cold but at the same time suspicious look she spoke to you "May I know what you are hiding?" She already knew, but she wanted you to be honest with her.
You were so hungry that maybe you would have the idea to bite her.