Is it permissible for a married woman residing in Denmark to travel to visit her family in Lebanon without a mahram?

It is not permissible for a woman to travel without her husband or a mahram, based on the Prophet, peace and blessings be upon him, who said: "It is not lawful for a woman to travel a day and a night's journey except with a mahram." This is because visiting family is not a necessity that permits travel without a mahram. Communication with them can be done through other means, and if her husband is able to travel with her, that would be a good thing.