The five-year-old daughter of Nazanin Zaghari-Ratcliffe has arrived back in the UK.
Gabriella has spent the last three-and-a-half years living in Iran with her grandparents, and can no longer speak English.
She visited her British-Iranian mother in the notorious Evin Prison when the authorities would allow.
Mrs Zaghari-Ratcliffe was arrested in Tehran in 2016 and sentenced to five years in prison after being accused of spying. She denies the charge.
She and her husband Richard, who has been campaigning for his wife to be released from prison, decided Gabriella should return home to the UK so she can start school.
Mr Ratcliffe said of his daughter's return: "Gabriella came back to us late at night, a bit uncertain seeing those she only remembered from the phone.
"Now she is peacefully sleeping next to me. And I am just watching.
More from UK
"It has been a long journey to have her home, with bumps right until the end – and I am grateful to all those at the British Embassy and Iranian MFA who helped smooth all those last blockages.
"Of course the job is not yet done until Nazanin is home.
"It was a hard goodbye for Nazanin and all her family. But let us hope this homecoming unlocks another."
Gabriella's return to Britain brings fresh challenges for the family.
After years being brought up in an Iranian household, Gabriella can no longer communicate with her father in English.
It also means that having been separated from her father for years, she will now be separated from her mother, leaving behind the life she has known since she was a toddler.
The family's MP Tulip Siddiq said: "Richard and Nazanin have made a decision that no family should have to make.
"It is heartwarming to see Gabriella reunited with her father after 1,300 days in Iran, but heartbreaking that she is separated from her mother Nazanin.
"Iran must end their hostage diplomacy and release my innocent constituent. Britain should also solve its long-running debt issue with Iran.
"Nazanin is at breaking point, and today is yet another reminder that she has been failed at the very highest levels of government."
Evin Prison has been dRead More – Source