Quote Originally Posted by Condor View Post
She did say the guns in the van were a second secret stash. We also know she had a secret stash in the basement of the tower. When the tower was over-run, it wasn't an issue of lack of weapons, just not enough time to get them.
Don't forget Kalani's conversation with Sean as the Other Tower was being over run (Chapter 27, Part 3):

Kalani: "Where are the guns?"
Sean: "They're locked up".
Kalani: "Where?"
Sean: "On the other side of where we are".

The issue wasn't a lack of guns, or inadequate time to get them. It's that the residents weren't trusted to keep their weapons with them, so they were all sitting, useless, in an arms room.