What Is Illegal Threat Online

While some states don't have specific laws about online threats, all have laws against making criminal threats and bullying. If an online threat would rise to the same level as an in-person, or telephonic, criminal threat, then the online threat will likely be considered illegal.

Saying to sue is not threat.

1. you can face some trouble if she makes any complaint, however, thorough understanding of the matter is required before forming any legal opinion, 2. one liner query cannot be resolved

Hi, This will not be punishable but you should take care while posting such things and she can sue you for stalking if she able to prove it. If you find it helpful, please rate my answer. Thank You

Dear Sir, Nothing to bother. In future you must be careful.