Daniel's sister -- Hazel.

[serotonin]

If the commentary wasn't recorded earlier in development before content cuts, then I can only conclude the individual developer speaking there was simply mistaken, like there was miscommunication among the members of Frictional about the game's actual content.

In any case, if you read and see some of the stuff in the super_secret.rar, it's clear that Amnesia changed A LOT during development. Maybe everyone just wasn't on the same page, even as the game was going gold.

Considering how indy this production was, it wouldn't be a shock.