If Your Landlord Sells His House To His Daughter, Does The Lease Transfer, Or Can We Break The Lease (since We Have Not Received A New Lease From The New Landlord Which Is His Daughter)?

Our landlord "sold" the house to his daughter. Our original lease is just with him, and we paid him soley. We only received a letter from his daughter stating that we pay her and where to mail the rent checks to. Are we legally allowed to break the lease and move?