Looks like she made it through, though, so no harm done.
what evidence is there to use the feminine pronoun?
Clearly paw-prints - this is not a human ignoring the sign . . . this is a human who's dog is not on a leash.
I'm not convinced. But anyway, you must know that sexual differences exist amongst most animals. So, your answer was not responsive. What evidence do you have that this is the work of an unleashed bitch?