I responded to a comment on the SciFi Board and since I get so irritated about this situation, I thought I'd post my reply here, too.
I can understand a normal person not believing in ghosts and time travel. But, these people all saw Quentin and rushed off to the Old House to avoid him until the situation was "corrected." They all saw the Parallel Time room and their look-alike counterparts and that Barnabas and Julia disappeared there, and so were definitely in PT. Presumably they all believed this.
Now, Barnabas and Julia, whom they all know and apparently trust, come back. True, the story of ending up in 1995 and coming back from then sounds quite strange. But, since they believe the first part, and since they trust the people telling this, one would think they would believe it, or at least consider it highly likely and take steps to help them prevent the disaster.
Instead, "sensible" Elizabeth, suddenly decides to believe in horoscopes, commissions one from someone she never met, and believes that over her trusted friends. They can't even try to get the children to safety "just in case" because it would upset her or she thinks it would upset them. After all, her horoscope said nothing would happen!!!
It really infuriates me.