Every that you tell in the show if 100% true. In an interview, Mary B was asked if she would ever consider turning her show into an entertainment show by telling slightly enhanced for comedy stories. Let's just say, she disagreed and the interview ended there.
In a short video, Mary was telling us about the time she saw a ghost. To add a bit of comedy to the show her grandson asked her to do a ghost dance. She did do the dance but it was never put onto the show as she was too embarrassed.
One thing Mary B can't stand is scripting. She watches videos and when they are scripted becomes furious and turns them off. It because of this reason that this show doesn't have a script. Story-Time with Mary B is a totally unscripted show.