LONDON — Nazanin Zaghari-Ratcliffe, a British-Iranian girl who has been detained in Tehran since 2016, was scheduled to be launched on Sunday after 5 years in a case that has deepened a diplomatic rift between Britain and Iran and drawn worldwide condemnation.

What precisely will occur, nevertheless, stays unsure, as has been the case throughout a lot of her time in custody, a interval crammed with raised expectations and dashed hopes for her household and supporters.

As of Sunday morning, her husband mentioned there was no signal that she can be allowed to return to London regardless of the official finish of her sentence. Ms. Zaghari-Ratcliffe, who was convicted of plotting to overthrow Iran’s authorities, continues to be underneath home arrest in Tehran, nonetheless with out her passport and nonetheless with out solutions on when the ordeal will finish.

“It’s, in my opinion, clearly a sport of chess. She’s the pawn,” her husband, Richard Ratcliffe, mentioned in an interview final week. “And it’s not the start of that sport.”

Ms. Zaghari-Ratcliffe, 43, has denied the costs. Rights teams, Western officers and the United Nations have mentioned her case is one in all a number of situations wherein Iran has arbitrarily detained foreigners on baseless expenses, typically dual-citizens like Ms. Zaghari-Ratcliffe.

Rights teams have accused Iran of making an attempt to normalize what they name hostage diplomacy with the West by arresting folks on trumped-up expenses after which utilizing them as political bargaining chips. Iran has denied partaking within the follow, and has argued that its dealings with Iranian residents like Ms. Zaghari-Ratcliffe are a home matter.

Earlier unpredictable interactions with the Iranian authorities left her household making ready for the worst earlier than the Sunday deadline, together with that the day might go with out her launch. Mr. Ratcliffe worries that she is going to “drift previous a degree that was the apparent determination level, that was making us hope we might get her house.”

Ms. Zaghari-Ratcliffe’s ordeal started in April 2016, when she was stopped at Tehran’s airport after visiting household in Iran along with her daughter, Gabriella.

Ms. Zaghari-Ratcliffe, who was working as a mission supervisor for the Thomson Reuters Basis, was tried and finally jailed within the infamous Evin Jail, the place she hung out in solitary confinement and struggled along with her psychological and bodily well being.

The British authorities granted her diplomatic safety in 2019 in an attempt to win her freedom, and her switch from jail to deal with arrest final March because the coronavirus pandemic swept Iran raised hopes that she can be granted clemency and have the ability to return to Britain.

As a substitute, she has remained under detention in her parents’ home and is required to put on an digital ankle bracelet. In September, Iran filed new charges against her and scheduled a new trial, although that was eventually halted.

Sunday got here with little signal of any change in her standing. For her to return to Britain, the authorities should take away her ankle bracelet, return her passport and provides her permission to depart.

Her husband had hoped she could be on a airplane by Monday, however that risk seemed more and more slim. “She’d been counting right down to this date for 18 months,” Mr. Ratcliffe mentioned, crossing days off a calendar in her household house. “There’s something deeply unsettling about going by that threshold, as a result of if this could occur, something might.”

In keeping with her husband, Iranian officers instructed Ms. Zaghari-Ratcliffe that her detention would finish when Britain settled a four-decades-old debt of 400 million kilos (about $550 million) associated to a failed arms take care of the shah of Iran earlier than his overthrow in 1979.

Ms. Zaghari-Ratcliffe was detained simply earlier than a courtroom battle over the debt, and whether or not Britain should pay it was set to start in a courtroom in London. Iran has mentioned the debt was not a consider her detainment.

Mr. Ratcliffe has been important of what he describes as a wait-and-see approach by British officials over his spouse’s standing, however he mentioned he was extra hopeful after assembly with the international secretary, Dominic Raab, final week.

A spokesman for the British International Workplace mentioned in an announcement that Mr. Raab and the workplace remained “in shut contact with Zaghari-Ratcliffe and her household, and proceed to supply our help.” It criticized her detention “as diplomatic leverage.”

“We proceed to do all the things we are able to to safe the discharge of arbitrarily detained twin British nationals in order that they are often reunited with their family members,” the assertion learn.

Kate Allen, the director of Amnesty Worldwide U.Ok., mentioned in an announcement final week that Ms. Zaghari-Ratcliffe had “suffered rather a lot throughout this prolonged ordeal.”

“We’ve at all times mentioned Nazanin ought to by no means have been jailed within the first place,” Ms. Allen mentioned, calling on the Iranian authorities to “affirm as quickly as potential that preparations are literally underway to facilitate Nazanin’s launch.”

However for now, she and her household are in a holding sample.

“It’s perpetual ambiguity,” Mr. Ratcliffe mentioned. “You could have this lengthy, possibly she’ll be house, possibly it’ll worsen, possibly it is going to keep the identical for yr.”