Hello Jeffrey, Unfortunately, no violation of any labor code is being committed by your wife's employer egging her to divorce you.
While employers should respect their employee's personal lives and not intrude into them, unless sexual harassment were also occurring, there is nothing illegal about her actions. (It would be illegal if she were to try to force your wife to divorce you by telling your wife that she will fire her or reduce her pay as a result).
However, if she is making and false and damaging statements about you to your wife to try to cause her to divorce you, you would have a claim against her for defamation for making those false statements. Although, if she is just telling your wife her opinions, while unethical and inconsiderate, her behavior is not illegal and doesn't give rise to any cause of action.
I realize this isn't the news you wanted to hear, and I sincerely XXXXX XXXXX had better news to give you (as I would like this type of behavior to be illegal as well), but I hope you appreciate my direct and honest response as it would be unprofessional of me to provide you with anything less.
Since my goal is to provide you with the best service today, please don't hesitate to request any additional information or ask me your follow up questions. If not, please remember to rate my answer positively so I get credit for my work!
Thanks and best of luck!