"She's had seizures this morning and is in pulmonary and respiratory distress".
She entered a rehab facility in July 2018, and was able to go home in August, even welcoming her Willy Wonka costars Paris Themmen (Mike Teevee) and Julie Dawn Cole (Veruca Salt) for a visit one month later.
"She's gone", was the message in a Facebook post early Thursday by her son Josh and his wife, Jasmine. Prior to her death, they said she had been given morphine "to keep her pain free and slow her breathing".
"We are heartbroken and reliving a grief we've lived every single day since she had the stroke over a year ago", the family writes. As it stood earlier today, she had too much Carbon dioxide in her blood and she's in nearly a coma-like state. Her family announced on Wednesday that they had chosen to stop Denise's treatment after she suffered a stroke past year that caused severe damage to her body.
She added, 'The temporary feeding tube was also removed (by her own doing is entirely plausible) so she's not as agitated'.
"They have upped her oxygen", her family wrote.
Just hours later, they shared another update, saying the actress was in a "coma-like state".
The child-star played the spoilt gum-chewer and golden ticket finder Violet in the hit adaptation of Roald Dahl's best selling children's book, Charlie And The Chocolate Factory. "Even if you can't donate simply sharing the link, and sharing our story so we can send Denise off and get some help and peace over the next few months would be so incredible".
A huge fan of chewing gum, Violet steals a piece that Wonka - played by Gene Wilder - is developing.
Despite having fame and success after her role in the 1971 film and from other shows and movies in the '60s and '70s, she unfortunately did not leave any inheritance behind.
Born on April 1, 1957, in New York City, before starring in one of the most iconic films of the century, Nickerson's first acting job was playing Amy Jennings/Nora Collins/Amy Collins on the TV series Dark Shadows.