The stepmother of a Florida cheerleader who tragically passed away under mysterious circumstances aboard a cruise ship has requested an urgent delay for an upcoming legal hearing involving her former husband. She argues that her testimony might incriminate either herself or one of their minor children, amid the ongoing criminal investigation into her stepdaughter’s death.

In Brevard County, Shauntel Kepner, previously known as Shauntel Hudson, submitted an emergency motion to a judge requesting the postponement of a scheduled December hearing. This request follows the FBI’s investigation into the death of Anna Kepner, who was discovered dead on a Carnival cruise ship on November 7th.

“The Respondent has been informed through discussions with FBI investigators and her legal counsel that a criminal case might be filed against one of the minor children involved in this matter,” explained Shauntel’s attorney, Millicent Athanason, in a communication to a Brevard County judge.

Anna Kepner is seen in a family photo alongside her father, stepmother, and several siblings. (Photo courtesy of Shauntel Kepner via Facebook)

A law enforcement source revealed to Fox News Digital that authorities have obtained surveillance footage from the cruise ship capturing Kepner with a “suspect.” The FBI is currently examining hours of additional video from the cruise captured prior to her untimely death.

In an emergency motion for temporary relief filed Monday, Shauntel’s ex-husband, Thomas Hudson, revealed that the couple’s oldest child, 18, had moved in with him after an alleged “violent altercation” between himself, Shauntel, and her new husband, Christopher Kepner, who is the late cheerleader’s father.

Read the father’s emergency motion:

Further, Hudson’s filing alleges their second son, a 16-year-old, “is now a suspect in the death of the stepchild during the cruise.”

“The [16-year-old]’s future has been put in jeopardy because of the choices made by [Shauntel],” according to Hudson’s filing.

The teen’s current whereabouts are unclear. According to the filing, he has been released from custody and is staying with an unnamed third party.

Anna Kepner was identified by her family as the passenger who died onboard the Carnival Horizon. (Instagram/Anna Kepner)

Hudson is accusing his ex-wife of alienating him from their two youngest children and arguing that his lack of involvement in their life is negatively impacting them.

In a separate response, Shauntel’s lawyer denied that their eldest child had been involved in a violent altercation and denied that she refused to allow Hudson time-sharing under the terms of their custody plan.

Neither Shauntel nor Athanason responded to requests for comment. In the motion, the lawyer noted that her client has a right against self-incrimination, and she argued that testifying in the divorce proceeding could “be prejudicial to her or her adolescent child” in the criminal investigation.

“An extremely sensitive and severe circumstance has arisen wherein the Respondent/Mother will not be able to testify at the hearing at this time,” Athanason wrote.

Anna Kepner wrote that she would endure after a rough breakup in a video posted just days before she died under unknown circumstances. (@fl.anna18/TikTok)

“Currently, there is an investigation being conducted by the [FBI] arising out of the sudden death of [18-year-old] Anna Kepner,” the filing continues. “Ms. Anna Kepner, the deceased, is the daughter of the Respondent’s paramour and the Respondent and the minor children of this instant action were all on the cruise ship together.”

The filing is part of a dispute stemming from Shauntel’s divorce from her ex-husband, Thomas Hudson.

Authorities have said little about the case.

The FBI’s Miami office is investigating the matter. And the medical examiner’s office in Miami-Dade County is handling the autopsy, although no cause and manner of death have been determined as of Wednesday morning.

The Daily Mail reported Tuesday, citing two unnamed sources, that Kepner’s remains had been discovered wrapped in a blanket and covered in life jackets under the bed in her cabin on the Carnival Horizon cruise ship.

Carnival said in a statement it is cooperating with the FBI. The FBI did not respond to a request for comment.