We have a 10 yo daughter, a 13 yo son, a 15 yo son and a 16 yo daughter. Here is our problem and ultimately our question. The three younger children are very caring and friendly and giving and love to help and are feel guilty when they do something wrong. They are really great kids. Always have been that way. Now, the 16 yo daughter is selfish, loud,
self centered, obnoxious and generally ...