My apologies on clicking "accept" answer--that was supposed to be an "information request". Please do NOT accept my response here. If you find my information incomplete please continue asking me questions until satisfied.
1. If you never officially retained her as your agent, then you still have a implied agent relationship. The reason I asked is I wanted to find out if you could somehow be responsible for her alleged injuries if she acting in your employ. That does not appear to be case here since there was no agreement, and you did not pay her anything at yet.
2. By the laws of "wild animal" liability, a person who maintains a wild animal is liable for ANY damage incurred by the victim. In other words, if a person tripped while escaping from a wild animal and in the process fractured her leg, then the owner of the animal would be responsible. However, a "wild animal" does not tend to include pets like dogs. If the dog owner will contest the injury, he has a good chance of beating her claim.
3. you have absolutely no liability towards her in this situation. if she attempts to sue you for not assisting her with her case, she may attempt to subpoena
or get your deposition. Feel free to give that information, and feel free to state that the dog made no threatening moves. You see, if there is a deposition document, the whole document is used in court, not just certain sentences--if you think she is faking the case, make sure to comment on that in your responses.
Sincerely, XXXXX Esq.