Whether she makes an effort to pay is completely up to her. She needs to do what is right for her, and i don’t know anything about her situation. However, i suspect that if she did some soul-searching, she would come to the conclusion that at least part of her husband’s CC debt was of direct benefit to her, and therefore she would sleep better if she tried to pay it off.
I’m more irritated at all the posters who think that it’s somehow OK to renege on debt that was incurred when married. If I get divorced, my wife can potentially receive a percentage of my future earnings. I don’t see why people don’t think that the converse is reasonable - that she should be responsible for a portion of my current debt.