First, don't jump to conclusions. Try to have an open and honest conversation with your wife. Ask her about the situation calmly and give her a chance to explain.
There could be many false stories like this that are based on unfounded rumors or malicious intent. Without proper evidence, it's wrong to assume such a situation is true just based on a general statement.
One should immediately stop listening and make it clear that this is an inappropriate topic. Do not participate in any form of spreading such stories.
One should immediately stop the person from sharing such inappropriate stories. It's important to set boundaries and make it clear that this kind of talk is unacceptable.
If one hears about such a situation, they should immediately encourage the victim, in this case the wife, to seek help. This could be reaching out to family members she trusts or contacting professional counselors.
First, don't believe it blindly. Verify the source of the information. If it's just hearsay, it's likely false.
If you hear such false stories, you should not spread them further. Spreading false rumors can cause harm to innocent people.
If you hear such a story, the first thing is to offer support to the victim. Let her know that she's not at fault.
If you hear such a story, the best thing to do is to stay out of it. It's a private matter. You could simply ignore it and not spread the story further as spreading it would be unethical and could cause unnecessary harm to the people involved.
One should firmly reject believing or spreading it. Since the Mormon faith is centered around family values and respect in marriage, these kinds of stories are not in line with what the community stands for. Moreover, spreading unfounded rumors is unethical in general.
If possible, try to confront the person who is spreading the story and tell them that it is wrong. Also, if the woman in the story is known to you, you can offer her support and let her know that you do not support this kind of behavior.