Had the nine Muses fought the way most sisters do, humanity's arts would be much the poorer. To help establish sibling harmony among your children, bind objects symbolic of each child with a six-foot-long brown ribbon. As you do so, repeat: "Binah brought you unto me. Mother goddess, hear this plea. Let my children happy be; bound in soulful harmony." If the Moon is waxing, you should contemplate a growth of love among the siblings; if waning, meditate on diminishing hostility. Pull the ribbon tight, and knot. Every time they fight, think of their goddess-blessed unity. It will not take long for the spell to take practical effect.