Legal Question in Family Law in Missouri

I am not sure what you mean. It is not unusual for a party to prepare for a trial or hearing, and in doing so, talk with the witnesses that they or the other side plan to call at court. There are limits to what can be said, outside the hearing of the other side. A Petitioner should not coach or use intimidation to make the witness like out of duress. But, telling the witness what they intend to ask them under oath, would not be improper. Unless a Judge has given instructions NOT to talk to certain witnesses, it might be foolish to go to court without talking to the witness beforehand. If they can contact the witness outside of court, so can you, unless you've been ordered not to.

Good luck