Problem from Paternal aunt

Hello, Need your advice to go about this problem. I live with my parents and my wife. I have been married for a year. We are staying in the same house from the past 27 years. My paternal aunt(My father's sister) has been staying alone for the past 27 years (unmarried). She hardly used to keep in touch with us. Once in a while she used to visit our place and we don't have any clue about her whereabouts, earnings etc. Now that my parents are aged, we (me and my wife) have to take care of them. We invited our aunt for our wedding and she started frequenting our house all of a sudden although we didn't like it. Since she used to come to our house, we used to just feed her and she used to leave the place. From past 3-4 months, she started asking my father to take care of her and she stay at our place. However, none of us at our house like to keep her over here. She started becoming very stubborn and used to come to our house and never used to leave the premisis. Somehow we used to manage get her out of the house. Since she used to create this ruckus very frequently, we decided to lock the gate and ignore her. Even during the lockdown, she used to somehow come to create nuisance infront the house shouting that we need to take care of her. We belong to a respectable family, middle class and we really cannot afford taking care of her. She doesn't belong to our house. Requesting advises on how to handle the situation. P.S.: She doesn't have any legal right over the house too as it is solely under my father's name.