Rosie O'Donnell Shares Zelda Williams' Message About Mental Illness After Daughter's Troubles: 'It Is NOT Cowardly to Suffer or Seek Help'

"No matter what the misinformed say, you can't simply CHOOSE to make mental illness go away," the post reads

Photo: Bruce Glikas/FilmMagic; Michael Kovac/WireImage

As she copes with the fallout from her daughter’s disappearance, Rosie O’Donnell is finding solace in the words of another celebrity’s child.

On Tuesday, the comedian retweeted a post about mental illness by Zelda Williams, daughter of late legend Robin Williams, who killed himself a year ago after battling severe depression.

“No matter what the misinformed say, you can’t simply CHOOSE to make mental illness go away,” wrote Zelda, 26. “It is NOT cowardly to suffer or seek help.”

O’Donnell’s adoptive daughter Chelsea went missing last month – just before her 18th birthday – after going off her mental illness medication. New Jersey police found her at the house of alleged heroin addict Steven Sheerer, 25, who has been charged with sending her a nude photo and endangering the welfare of a child.

Sheerer’s lawyer told the Associated Press that he and Chelsea began a relationship on Tinder and that she lied about her age. She successfully pleaded with a judge to lift a no-contact order between them Friday. She also moved out of her family’s New York home to go live with her biological mom in Wisconsin.

Though her rep Cindi Berger said O’Donnell has a “good relationship” with Chelsea, a source told PEOPLE that the high school student didn’t like it when her classmates discussed her famous parent.

“She was always pretty quiet, but she hated if anyone brought up her mom,” the source said.

O’Donnell tweeted about finding comfort in seeing the Broadway musical Hamilton over the weekend.

“Just when I am sure I can’t go on ” she captioned a video of the performance, adding the hashtag #liferaft.