Shamima Begum, who travelled to Syria to join the so-called Islamic State, says her "whole world fell apart" when her British citizenship was revoked.
Speaking for the first time since losing the initial stage of a legal challenge against the decision, she told ABC News: "When my citizenship got rejected, I felt like my whole world fell apart right in front of me.
"I wasn't even told by a government official. I had to be told by journalists."
Former Home Secretary Sajid Javid stripped the former east London schoolgirl of her citizenship in February last year after she was found in a Syrian refugee camp, three years after joining IS - a decision Ms Begum's lawyers argued was unlawful as it rendered her stateless.
She was only informed of the decision when ITV News Security Editor Rohit Kachroo showed her a copy of the letter.
Ms Begum's lawyers argued the decision was unlawful, but a tribunal led by Justice Elisabeth Laing ruled the decision lawful on February 7.
ABC News Correspondent James Longman visited Begum in her refugee camp for foreign women in Northeast Syria.
In tweets shared by Longman, Begum is pictured wearing jeans, boots, a parka and a loose hijab. When she spoke to ITV News last February she was wearing a burqa. _Agencies