Before the Lord can bless the world, He must purify it. Otherwise, His greatest graces are mixed with sin. The Woman will act, and is already acting, to save her children, not from the purification itself (for they, too, need to be purified) but from the destructive forces always involved in this cleansing. First, she calls them away from dangerous situations. Secondly, she moderates the purifying fires. Third, she helps these fires to be totally effective, consoling her children in the middle of their sufferings.
Without her, even the strong people despair. With her, even the weak people persevere. This is a secret of Mary.