[Well, that's certainly helpful. And what she'd expected.] I need untreated hemp rope, rice paper, and special inks. I can afford some of them, but they aren't exactly common here. Some shops have them, most do not.

Mostly? It's just time. It takes a lot of effort to really sanctify an area, and putting down those kinds of defenses just isn't a short process. The best thing, really, would be to prepare fallout shelters rather than warding the whole colony. It's less taxing and more efficient.