Rarity darted her head around trying to find her missing possessions. Instead she noticed a trail of nuts leading out from her hidey hole.  She looked around and saw there were no nut-bearing trees nearby. Plus, the very distinct trail they made suggested beyond a reasonable doubt that her bags were stolen. After that deduction her memory started to return in flashes. She looked at her flank, seeing numerous blue, red, and yellow spines stuck in her barding.