Taylor Casey was last seen June 19 at a yoga retreat on Paradise Island.
The new photos show clothes, books and other items inside Casey's tent.
Casey's mother traveled to the retreat last week, but said her visit was "deeply unsettling."
"I just felt like they didn't care. They didn't care at all," Seymore said.
Now the family is calling on the FBI to step in, saying without their support, they may never know what happened to her.
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