Amy, 27, passed away at her home in Camden, north London on July 23 and while a devastated Kelly attended the funeral, her mother Sharon revealed the 'Fashion Police' star is struggling to cope.
She told People: "There's nothing I can do to take Kelly's pain away.
"This was the first person she's loved who she's lost. That in itself made her frightened and shocked. She's gone through all these different emotions. The only thing that will help her is time.
"It's all a part of life, isn't it. We thank god we're here and we're healthy and we do what we do. But some people aren't as fortunate as us. It's all a part of it. Life and death are as much a part of living, unfortunately."
After Amy's death was revealed, Kelly took to her twitter account to share her grief.
She wrote: "i cant even breath right my now im crying so hard i just lost 1 of my best friends. i love you forever Amy & will never forget the real you! (sic)"