The true story in 'The Haunting of Connecticut 2' likely had elements such as a family moving into a new place and then experiencing a series of inexplicable and terrifying events. There may have been reports of strange voices, objects moving on their own, and feelings of being watched. These are common elements in haunted - house - type true stories. The family's struggle to come to terms with what was happening, whether it was through religious means or seeking outside help, was also probably part of the real - life account. As the movie makers adapted the story, they would have emphasized these elements to create a sense of horror and mystery for the viewers.
Well, from what is known, the family's experiences in the haunted house are a key part. Their encounters with strange noises, apparitions, and unexplainable phenomena are likely drawn from the true story. Also, the family's reaction to these events, like their fear and attempts to deal with the hauntings, are probably based on real - life situations.
One key element might be the location. Often, in true - story - based horror movies, the actual place where the events occurred plays an important role.