Then sit her down and tell her that she hurt you. You are the same person that she knew before you answered her honestly and your friendship shouldn't change. If she feels that she has to save you from yourself - she obviously cares about you to try to help you even though you don't really need the help. Let her know that you appreciate her too...it is rare to have a friend like you described - one who wants to save you from yourself..

__________________
A blessed thing it is for any man or woman to have a friend, one human soul whom we can trust utterly, who knows the best and worst of us, and who loves us in spite of all our faults.