We're did annemarie hide Ellen necklace

She hid it in a trunk filled with her late sister's belongings

Later in the book, after Ellen left, Annemarie hid the necklace once again, vowing to one day return it. She hid it in the trunk that held her late sister's belongings. It was wrapped in a skirt that Lise had worn. Near the end of the story, Annemarie was able to return the necklace to her friend