How would you counsel your FDW if she tells you that her husband is seeing another woman?

I would definitely try my best to provide a listening ear, and give good advice. God knows I would need one if it ever happened to me. Although I'm wondering whether there should be another conversation with the FDW about boundaries? At the end of the day, it's still an employer-employee relationship and I wouldn't want to be to caught up in what's happening with her at home. Like, if it were me talking to an employer, I would let them know that there might be some issues at home that might be distracting me from work, but I wouldn't want to tell them all the details about it. Not sure if I'm the only one feeling this way.