The principal (my father), whom I live with, is not incapacitated and can make his own decisions. He gives me permission to go on his property that he owns anytime I want to. His power of attorney (my niece) calls the police on me for trespassing on the property. Rhe police didn't want to hear anything I had to say and did not discuss or attempt to contact my father to find out if I have his permission to be there. They still haven't tried to contact him. Is that legal?