Love, Ruby Lavender (Kobo eBook)
Ruby Lavender used to have a good life. She and her grandmother, Miss Eula, were inseparable--they even drove the getaway car together for chickens rescued from the slaughterhouse! But this summer, Miss Eula will be in Hawaii, and Ruby's sure it'll be a lonely, empty, horrible season without her. What happens instead? Ruby makes a new friend, saves the school play, writes plenty of letters to her favorite (and only) grandmother . . . and finally stops blaming herself for her grandfather's death.