I was so discussed in Savanna's mother, I thought how dare you treat this beautiful little girl with such anger, bitterness, cooldness, and worst of all, ABUSE. 
Your children are what you teach them, how you see them, is a reflection of you, 
I felt so sad for Savanna and cried when I heard the named Savannas mother called her , yelled at her and hit her...ya no. Savanna didnt asked to be born, or have Prader-Willi Syndrome,the least you could do is raise her to the best of your ability, and im sure you know you can do better then what your doing now . 
I am surprised that your family or friends have not reported you for abuse...In my eyes you need some serious help...Parenting classes , Therapy, Im not sure what, Im not Dr.  
But, I do wish you the best and do hope you find the help you and your daughter need. 
 
Sincerely 
Angela 
British Columbia 
Canada.