Board Thread:General Discussion/@comment-118.137.168.148-20130811115237/@comment-6697950-20131110090700

In the anime, her character development is either subtle, or non-existant, as the anime skipped most internal monologues, which were usually one of the main means of character development.

If you want character development, I would advise reading Progressive, Morning Dew Girl (the original, not the adaptation), A Muder Case in the Area, Mother's Rosario. Some other stories have hints about the character development, but even the book is subtle with it at times, so don't expect to see it without putting any effort in it.