how does alexandra's home reflect her character?

Alexandra's house was very much an individual extension of Alexandra herself,

"There was something individual about the great farm, a most unusual trimness and care for detail. . .. You feel that, properly, Alexandra's house is the big out-of-doors, and that it is in the soil that she expresses herself best."

Her house and farm were practical and nurturing in the way hard work gives people the satisfaction of purpose and place.