Dr. Laura made a couple of good points. One was that the "N word" has a big double standard attached to it. She's right that on HBO black comedians use it over and over, with impunity, but if a white person DARES to say it, then somehow they're a pariah.
The other is that, if the black woman got into an interracial marriage, she should have known there were going to be some consequences to that, which she should have taken into account when making that decision.
However, a wife should be able to depend on her husband for protection from things like this. Her white husband is not a very good person or much of a man if he lets his friends insult his wife with such language, especially in front of her where the words can cause so much pain.
I think Dr. Laura should have been more compassionate to the black woman's hurt feelings and should have tried to help her deal with the situation, and give her some good advice. Instead she went off on this rant. Of course when I have listened to her show before Dr. Laura has very often been rude to people and didn't seem to want to be particularly helpful or sensitive to other callers either.