The Free Kindle Book of the Day is Agnes Grey by Anne brontë. From the synopsis:
Agnes Grey’s family faces financial ruin, and she must find employment. Limited by gender and class, Agnes becomes a governess—a vocation that teaches her about the corrosive power of status and wealth. A realistic meditation on Victorian mores, “Agnes Grey” is the first of the two novels Anne Bronte wrote before her death at the age of 29.