Nikki Grahame's father David passed away nine days after her death.
The 38-year-old reality TV star died last month following a long struggle with the eating disorder anorexia nervosa and her father David lost his battle with pancreatic cancer just over one week later.
Nikki's mother Sue, 66 - who was divorced from David - also told the Sunday Mirror newspaper that she begged nurses not to discharge Nikki from the Dorset County Hospital, where she spent three weeks before her death.
She told The Sunday Mirror newspaper: "I am destroyed. There’s part of me that’s lost forever. My fight to get Nikki well started 30 years ago. In the end, I lost her. It has been the fight from hell.
The nurses were amazing but I told every single one, ‘She mustn’t go home. She’s too ill’. Her father even called and told the hospital, ‘If you let her leave, Nikki will die’. But they still threw her out."
And Nikki's death has sparked a "full internal investigation" at Dorset County Hospital.
A spokeswoman for Dorset County Hospital NHS Foundation Trust recently said: "Staff at the Trust were deeply saddened to learn of the death of Miss Grahame, and our thoughts are with the family and friends of Miss Grahame at this very difficult time.
"A full internal investigation into the circumstances of Miss Grahame’s death is currently underway. This is in line with standard procedures following any sudden death.
"All information and findings arising from this investigation will be shared confidentially with Miss Grahame’s family, and thereafter with the Coroner as part of any Coronial process.
"The Trust will do everything it can to assist the Coroner in any ongoing Coronial process."