This is a "Wild Mass Guess" entry, where we pull out all the sanity stops on theorizing. The regular entry on this topic is elsewhere. Please see this programme note.
Ms. Tweezer was a conservative Christian
She restricted imagination and made sure everything was "real". The sad truth is, a lot of super conservative Christians do exactly that. Anything that's remotely imaginary is "satanic", and many children who grow up in a very conservative household aren't allowed to enjoy imaginative fiction or anything involving "The occult". Many Christian parenting websites outright encourage parents to restrict their children's imaginations. Imagination=occult.