You can bring her into a seperate room in your home. But frankly..why do you keep giving the cat back to her? She looks like a solid black cat....how could the nasty woman prove it is her cat? Just tell her you have no idea where Midnight went to....perhaps she was hit by a car...give the cat a new name...keep her indoors and if the woman says it is her cat tell her to prove it....unless it was microchipped or has distinctive marking there is no way to prove it.

Denyce