It matters. [Because if it doesn't matter, then why bother trying at all? She takes a deep breath.] We don't know what's out there, or who might show up here. The danger could be a wild animal, or someone else kidnapped from their home. If that happens, someone in shouting distance would help.

[It's not ideal, but her thoughts are already turning the problem around, looking for directions to come at it from.]

We could make spears with those. They'd work for hunting. Glass might not be the best idea, but there's other things that will do for blades.