In 2016, Mack sent tweets to the Beauty and the Beast actress as she wanted to introduce her to the "amazing women's movement". She'll be living with her parents.
Asked how she managed to navigate that change in her life, she said: "I have a wonderful teacher and mentor named Keith Raniere, who really gave me some incredible guidance". "Let me know if you're willing to chat", read the tweet that was broken up into two separate ones addressed to Watson.
"Over the course of a number of years, Mr. Raniere mentored Allison in her examine of performing and music", her web site said.
She has pleaded not guilty to sex trafficking and forced labor conspiracy charges.
And again in March that year, Mack took to Twitter to implore Emma Watson to listen to her plight, saying: '@TheCathyJensen @EmWatson Thank you for the bump up!
According to court documents, Mack recruited women to join the cult and made them have sex and engage in sexual activity with Raniere. I'm a fan of yours as well! "I'd love to chat sometime", Mack tweeted.
"Mack and other masters recruited... slaves by telling them that they were joining a women-only organization that would empower them and eradicate purported weaknesses the NXIVM curriculum taught were common in women", said the prosecution team in a statement.
In an announcement following Mack's arrest and a letter opposing Mack's bail, federal prosecutors have revealed disturbing accusations - together with coercive intercourse, restrictive diets and blackmail - concerning the inner-workings of the group, known as Nxivm.
A US magistrate judge released Mack, known for her role in WB Television's "Smallville" series, after her parents agreed to put the family's Los Alamitos, California, home up as collateral and Mack, 35, agreed to live with her parents under house arrest.
Raniere, 57, was the leader of a secretive group accused of coercing female followers into having sex and getting branded with his initials. "The victims were then exploited, both sexually and for their labor, to the defendants' benefit", U.S. Attorney for the Eastern District of New York Richard P. Donoghue said.
Mack reportedly climbed the ranks of Raniere's cult because she was such a strong recruiter, using her "celebrity" to bring in fellow actresses, including Grace Park and Nicki Clyne.