Pedagogical literature. I think it is a literary curiosity. There are positive and negative characters. The book is interesting, but sometimes I wanted to put it down. You can read it.
I love this book. I've read it many times since my childhood. I think that not just every girl, but every person should read it. It's especially good if you have siblings (I'm the oldest of 3 girls) or even better to understand a sibling relationship if you don't have siblings.