NEED TO KNOW

Anna Kepner died while on a cruise with her father, stepmother and step-siblings

Kepner was found dead a day after she told family she wasn't feeling well and retired to bed

Kepner's step-sibling could face criminal charges following her death, her stepmother said in a court filing; authorities have not named a person of interest in the case

The mother of Anna Kepner says she was not notified of the teenager's mysterious death aboard a cruise ship — and only learned about it through Google.

Kepner, 18, was found dead under a bed on a Caribbean cruise on Nov. 8.

The Titusville, Fla. high schooler was on the cruise with her father, stepmother and two step-siblings, CBS News previously reported.

Kepner's biological mother, Heather Wright, reportedly says she

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