"There should be still some on the shelves." She didn't really need them all. Riff was just protective of equipment and yes, she hoarded but you never really knew when she'd need something. And she wasn't about to begrudge him protection, "But don't come crying to me when you get shot and I'm nice and safe using a robot with a chainsaw attachment to do my dirty work." Could she do that? Probably. If there were chainsaws in the store.