atheist

Marriage with a person who has no religion

Q: I have a Muslim friend. She living in a non-Muslim country and married to a man who follows no religion. She doesn't know about Islam much. In that country rule they are husband and wife. How she can marry a Muslim now? Even though she is not in relationship with her husband for a long time. Please guide me in this regard. Is she in need of a divorce from that man or not?