Logan had been at a rainforest retreat at the Canto Luz Centre in Puerto Maldonado in southern Peru, where she participated in a ceremony with a shaman.
Tobacco purge tea is meant to induce vomiting and promote clarity for one's future path. But Logan apparently became violently ill, had convulsions and died.
The family suspects the tea played a role in her death, but Peruvian authorities are still investigating. The initial autopsy report found that Logan died of pulmonary edema, an accumulation of fluid in the lungs that can cause respiratory failure.
Representatives of the Canto Luz Centre said in a statement that Logan's reaction to the tea was "extreme and unusual."
Logan's memorial service will take place in her hometown, where her parents still live.