Bella, you cannot turn me down, not you, not now!
My darling sister, mentor, guide, you MUST save him! He is my little boy, dearest, the air I breathe, the pillar and cornerstone of my existence. I know how you feel about him, how you feel about my husband, and I know too that after all you have endured you are entitled to that disdain. But my darling sister, mother, saviour... help me save my son!
The Dark Lord will not listen to Lucius, and I don't honestly believe Lucius will even try. He loves Draco as dearly as I do, but he has never been and never will be the martyr for a lost cause. I cannot ask Severus to interfere on Draco's behalf, I do not know where to find him, and he has already done so much. But you, you my guardian angel, are still of some importance to Him. Shunned as you feel, sister, it is clear He has, at least, cleared you of blame. You alone were spared the wrath He has delivered on the others. I thank Merlin He has yet to implement some continuous form of punishment. Somehow, if remotely, you are still within His favoured, and I ask, no, I beg you to interfere on Draco's behalf.
My only child, Bella, the incarnation of Lucius' love for me, my pride and joy, my reason to live... if you cannot bear the thought of saving him, then I beg of you, sister, to save me!
I have never asked you for anything, and it tears at me to turn to you now that you too are vulnerable. But dearest, if Draco... if Draco dies, I die with him. My child is everything, Bella: my flesh, my blood, my soul, heart and joy. No dementor could wreak the havoc in me that losing him would. So save me, sister dear, take my son to safety.
Desperately, Cissy.