Should a girl abandon her elderly, lonely, and mentally ill aunt, whom she considers like her mother, despite the aunt's need for care?

The maternal aunt has a great right to piety and respect, as the Prophet, peace and blessings be upon him, said: "The maternal aunt is in the position of the mother." However, her right comes directly after the right of the parents, because they are the direct cause of a person's existence, and their right comes after the right of Allah Almighty. Therefore, it is not permissible to go out and live with the maternal aunt except with the parents' permission, and on condition that there is nothing forbidden in it.