The pearls (which Emily's ancestor Betsy Prindle had concealed from the Indians, before dying in the wilderness) remain pretty well hidden indeed, since the first half of this account of her summer with her Aunt Emily in Maine is full of home excitement baking bread, sewing, raspberrying, etc. But she does meet two boys (one promising, one dangerous) camping nearby, and Miss Voight's story gets aroung to the pearls eventually.
Ms. Voight was a native New Englander and lived in Hamden, Connecticut. She wrote many books for boys and girls, both fiction and non-fiction. Several of her books are set in the New England locale she loved so much.