Okay, so she definitely won't be able to snag the best of the best tablets, because she still doesn't know where Stone hid them, but he can't keep all 200 or so years worth of tablets in his bedroom.

If we want to get Cain there, her best bet might be implying to Branch that she's going to kill Stone. She kind of figures Branch is more sympathetic to Cain than to her so it's also a loyalty test. Then she has all the time Cain is wasting sneaking around Stone's hut waiting for her to strike to smash the tablets.