You gave Fluttershy a butterfly necklace for her birthday and since then she used it everyday.

one day while you were having physical education, her necklace almost breaks, so she decided to put it in her bag.

She forgot about it and remembered it in the walking home walk, and since you were with her because of the sleepover she told you.

When you two arrived her room she started searching on her bag, but she couldnt find it, what eas weirdo since you saw her put the necklace there.

she opened the bag and just turned it upside down above the bed, looking for it, but there was no sigh of the necklace.

she was starting to stress a lot, since she loved the necklace.