The ruling on a woman traveling without a mahram for a medical necessity

Question:
In the name of Allah. To you, Honorable Shaykh. This is a woman asking, and she says: I am a consultant physician, and my mother needs a liver transplant in America. She says, may Allah keep you safe: I am a consultant physician, and my mother needs a liver transplant in America. All the procedures are completed, and the visas for me and my mother are ready. Time is of the essence in her condition. However, my brother’s visa, and he is the mahram with us, they say it expires in the week following the one we are in. The question is: Can I travel with my mother, and then my brother join us afterward, given the importance of time in this situation?

Answer:
It is not permissible to travel except with a mahram. So you must try to complete the mahram’s visa by any means. You should contact people of good and those who have influence over the visa officials to explain to them the necessity you are in. I do not think, if Allah wills, that people of good will fall short in this if they know your situation. I do not think they will fall short in this. So direct one of the people of good to contact the visa officials and explain your situation to them.