I think the Nancy character was wrong for the show. She was brought on to the show as a Nellie like person for Mrs Oleson. Nellie was just spoiled and a little naughty,but she loved her parents and brother and never did anyone any serious harm. Nancy was pure evil.I think the show should have at least looked more into Nancy's background.She seemed more like the little girl who played in "The Bad Seed". Nancy's background might have been one of abuse. I hae heard abused kids are unable to give or receive love. That describes Nancy. Nancy could never love anyone and she was unable to receive love from anyone.She didn't love her adoptive parents,only the things that she could get from them. She was unable to feel empathy or sympathy for anyone,and was willing to murder to get what she wanted,no matter how minor it was. Nancy could have grown up to eventually kill her parents (lizzie borde) or become some criminal.