Investigators still haven't identified who killed her or who hid her body afterward, though her stepbrother has been questioned by the FBI.

A woman who claims to be the biological mother of Anna Kepner, the 18-year-old who died on a Carnival Horizon cruise ship, spoke out on TikTok. “My beautiful baby girl was found dead Friday and I just found out last night,

The FBI is investigating the death of Anna Kepner, a Florida high school senior found dead on a Carnival cruise ship days after posting TikTok videos about heartbreak.

Anna Kepner, a high-school senior from Titusville, Fla., had posted a bathroom-mirror selfie — complete with a caption about happiness — on TikTok on Oct. 30, her profile shows.

Anna Kepner died while she was on the Carnival Horizon cruise ship with her family on Nov. 7. The cause and manner of her death are still pending.

Nearly two weeks after Titusville teen Anna Kepner died on a Carnival cruise, information regarding how she died remains unconfirmed. Now, court documents in an unrelated case show Kepner's step-brother is a potential suspect in the FBI's investigation surrounding her death.

She was scared of him because he always carried around a big knife,” the alarmed father told the outlet, which posted a teaser Thursday night ahead of the bombshell interview.

To honor her spirit, Kepner’s family is asking guests to wear colorful clothing to her Celebration of Life, especially blue, which was her favorite color. Anna was found dead aboard the Carnival Horizon cruise ship on Nov. 7. Her death is under investigation by the FBI.