Susan developed the "Ring Theory" after experiencing breast cancer and witnessing a friend's brain aneurysm. The Ring Theory provides guidance on supporting those going through trauma by drawing concentric circles representing degrees of closeness to the person experiencing hardship. The inner ring contains the individual at the center of the crisis, while outer rings include those increasingly further removed. The rules state that the person most affected can express negative emotions to anyone, while others can only share such feelings with those in larger, outer rings further from the center. This aims to ensure those closest receive comfort rather than complaints or burdens from others.