Carla is a U$.$S$.$ citizen living in Buffalo, New York, USA. She is engaged to be married to Tim who lives and works in Toronto. Carla still has a permanent home available to her at her parents home in Buffalo and most of her belongings and friends are in Buffalo. Carla spent four days per week with Tim in his Toronto apartment during $2023.$ Carla's $2023$ residence status is best described as $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$