Adventure & Fantasy Books for Girls 9-12

When Monica goes to gather flowers in the forest, she doesn’t have any idea that her most adventurous day is about to begin. Her day starts with finding a strange egg, which is as tall as she is!
As she goes through different islands, she realizes that one is stranger than the other and being a kind and brave girl, Monica solves all the problems together with her precious friend.
Will Monica be able to help her friend find her island at last? Or will they get into breathtaking adventures that never stop?
Monica teaches her friend determination and courage, which helps them a lot during their adventures.