Even if there wasn't a sensor inside of this? They had thirty seconds before someone noticed that there wasn't a guard on duty. Maybe a minute. She went and grabbed the stardust jar nearest before beginning to fill the duffel bag with it and its compatriots. The cash? If he wanted to grab some he could. She viewed it as more of a liability, though she might consider picking a single brick of it up before the end. Make this look like more of a normal robbery, but... a thought occurred to her as she worked.

"Think they have any protections on these?" She didn't know about dye packs.