So does that mean Laura momentarily received information from the future when she produced the original talk recorded on video?
Maybe! Although a more mundane explanation would be that, in trying to remember the name of a place in Oz/Nz areaa, her brain pulled out Christchurch, rather than Port Arthur, possibly because Christchurch had been in the news a few years previously and it's a name that tends to stick in people's heads, especially the heads of biblical historians.