My older sister is stingy/greedy/selfish, what would you do?

I am the Mother of two daughters who are five years apart and as different as night and day. The older is very serious and studious while the younger is a cheerleader, prom queen, and studies enough to stay eligible for her many activities. You should not expect her to be your buddy because of the age difference. My daughters didn't really get to be good friends until they were both married and had children. All you can do is love her and don't expect anything from her until you both mature.