A young woman who was raised in Nxivm and is one of the leaders of the DOS sex slave cult has entered a guilty plea to charges of racketeering and racketeering conspiracy.

Court documents obtained by DailyMail.com show that Lauren Salzman appeared before Judge Nicholas Garaufis last Monday in an unannounced hearing that was not on the docket.

A redacted transcript from that hearing reveals that Salzman not only informed Judge Garafulis of her plea, but also confessed that she did in fact keep a woman known as Jane Doe 4 captive inside a locked room for two years.

Salzman, 42, also stated that Jane Doe 4 was put to work while enslaved in the room, and revealed that she 'threatened to deport Jane Doe 4 back to Mexico if she did not complete labor requested by myself and others.'

She later admitted to being a member of DOS during the hearing, and confirmed that women were branded with the initials of Keith Raniere and Allison Mack by a doctor who used a cauterizing pen.

Salzman and the other defendant seemed reluctant to take a plea or distance themselves from Raniere for months, but that all changed just a few days before Salzman's hearing when the US Attorney's Office filed new child pornography charges against the Nxivm founder in a superseding indictment.

Scroll down for video

Deal or no deal: Lauren Salzman (above in January outside federal court in Brooklyn) entered a guilty plea to charges of racketeering and racketeering conspiracy in secret hearing last Monday

Like mother, like daughter: That came on the heels of her mother Nancy (above outside federal court on March 13) entering a guilty plea to racketeering just two weeks prior to her daughter's hearing

Things fall apart: Salzman admitted to being a member of the sex slave cult DOS, and confirmed that women were branded with the initials of Keith Raniere (above in a courtroom sketch from April) and Allison Mack

Salzman is now the second member to enter a guilty plea in the case, following in the footsteps of her mother Nancy Salzman.

Nancy did not appear to have a deal with prosecutors, meaning that she and her daughter could be taking the fall for leader Keith Raniere with these pleas.

Salzman's super-secret hearing and the heavily redacted transcript does suggest however that she could be one of the three defendants who has been offered a plea deal.

The other two who are negotiating deals with the US Attorney's Office for the Eastern District of New York are believed to be Allison Mack and Clare Bronfman.

There is a chance however that it is the two Salzmans and only one of these women working out a deal, with both Bronfman and Mack making little progress in their negotiations over the past year.

A spokesperson for the US Attorney's Office would not comment on which defendants had made deals with prosecutors.

Salzman was raised in Nxivm due to her mother's role as a co-founder of the group, and it was her slave Sarah Edmondson that blew the lid on the organization back in a 2017 interview with The New York Times.

Edmondson went into further detail about her time inside the cult on the CBC podcast Surviving Nxivm.

Nancy broke down in tears as she entered a guilty plea to one count of racketeering while apologizing to her daughter and co-defendant, Lauren.

She said that it took a great deal of soul searching to arrive at her decision, and then struggled to gather herself as she stated: 'I am deeply sorry for the trouble I have brought to my daughter.'

Nancy did this without a plea deal in place and said she was eager to begin atoning for hers sins, with her crime carrying a sentence of up to 20 years in prison.

At the same time, attorneys for the US District Court for the Eastern District of New York began laying out their case against the remaining five members of the group, who in addition to NXIVM were also involved in the branded sex cult DOS.

The most shocking claims to emerge out of a memorandum filed in court last month by prosecutors was that Raniere allegedly raped two underage women for years.

Raniere was also in an 'intimate relationship' with billionaire heiress Clare Bronfman, claim the documents, who had previously been funding the legal defense for her five co-defendants but is now distancing herself from the group.

'I am pleading guilty because I am in fact guilty,' said a shockingly frank and emotional Nancy.

'I got involved with NXIVM because I believed we would be helping people, and I still believe some good came out of it.'

The judge scheduled her sentencing for July, and it is unclear if she will now be testifying against her former co-defendants in the case.

'NXIVM's teachings and practices are no more inflammatory than the allegations surrounding the predicate acts and charged offenses themselves, which include keeping a woman in a room for nearly two years, nonconsensual sex, extreme diets and sleep deprivation, sexually explicit photographs and branding of Raniere's initials on women's bodies without their knowledge,' states the new prosecution filing, submitted on Monday.

In sync: A transcript of the hearing during which Salzman entered her plea was heavily redacted, which suggests she could be a cooperating witness and have a deal like Clre Bronfman (above outside court last Thursday in Brooklyn)

Kryptonite: The other defendant negotiating a deal with the US Attorney's Office for the Eastern District of New York is Allison Mack (above) according to her lawyer

The memo also details how the government plans to show the ways that the defendants 'protected Raniere and the Enterprise by, among other things, attempting to silence and intimidate DOS slaves and issuing public statements falsely denying Raniere’s involvement in DOS.'

One example that is offered involves comment that Bronfman made after she 'received letters from separate DOS victims requesting the return or destruction of collateral, which included descriptions of the collateral, including nude photographs and videos.'

Despite having seen those letters, Bronfman still publicly stated that DOS was a 'sorority' which had 'truly benefited the lives of its members, and does so freely.'

She went on to state: 'I find no fault in a group of women (or men for that matter) freely taking a vow of loyalty and friendship with one another to feel safe while pushing back against the fears that have stifled their personal and professional growth.'

A brief mention is also made of a campaign launched by Bronfman and Raniere to lure former members to Mexico where there were reportedly warrants out for their arrest.

Prosecutors also plan to hone in on the subservient role that woman play and are taught to play in the organization.

'Nxivm’s teachings about women’s allegedly prideful natures and willingness to "play the victim," and the emphasis in Nxivm’s teachings on penances and "ethical breaches," are interwoven into Jane Doe 4 and the DOS victims’ experiences,' states the memo.

'These concepts also appear throughout the documents that will be trial exhibits, including emails between the victims and the defendants.'

It then cites: 'For example, Jane Doe 4 and Raniere exchanged at least 300 emails discussing her supposed “breach” and approximately 400 emails discussing her acting like a "victim."'