LONDON — The 19-year-old woman who left Britain to join the Islamic State and who recently spoke out about wanting to return home has given birth to a boy in a refugee camp in Syria.

The woman, Shamima Begum, had recently fled the last remaining village held by the terrorist group in Syria.

In a televised interview with Sky News on Sunday, Ms. Begum asked to be allowed to return to Britain. As another woman cradled her newborn, Ms. Begum also defended her actions in Syria, saying she had only taken care of her husband and children and had never made propaganda for the Islamic State or encouraged others to travel to Syria.

“I think a lot of people should have, like, sympathy toward me for everything I’ve been through,” she said. “I didn’t know what I was getting into when I left. And I just was hoping that maybe for the sake of me and my child, they let me come back. Because I can’t live in this camp forever. It’s not really possible.”