Anna Kepner, the teen found mysteriously dead on a Carnival cruise ship earlier this month, was like “two peas in a pod” with the stepbrother now reportedly suspected in her death, her grandma said Monday.

The tragic 18-year-old Florida high-school senior had been traveling on the Carnival Horizon ship with members of her blended family when her corpse was found stashed underneath a bed — wrapped in a blanket and covered with life jackets.

Authorities have not confirmed who may have been behind her death, but court documents from an unrelated case have indicated that Kepner’s unidentified 16-year-old stepbrother, who was sharing a room with the teen at the time, is being eyed as a suspect.

Kepner’s grandmother, Barbara Kepner, said in an interview with ABC News that authorities to

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