Take a look at the sack

Whatever she was about to do with the contents of that sack you didn’t like the look of it, time to investigate! You move to the shelf and pick up the small brown sack that she was about to show you.

Hmm it’s pretty light, you’ll have to open it to learn more, You place it on your outstretched palm and cautiously open it with your other hand.

You nervously bring it closer to your face and peer inside. There’s a mound of what looks like.... Dust? How strange, why would she want to show me this? What will you do Jane?

You’ve been keeping it at a safe distance from your nose this whole time maybe smelling the dust will tell you what it is? You could just put it back, what she wants to tell you about it could be important. If you don’t trust what she’s about to do you could toss the strange dust out and replace it with regular dust from one of these old shelves.