Nazanin Zaghari-Ratcliffe, 39, a British-Iranian dual-national, was arrested at a Tehran airport on 3 April 2016 prior to boarding a plane back to the United Kingdom after a regular family visit to the country with her infant daughter Gabriella.
Judge Salvati told her to expect to be convicted.
"According to The Free Nazanin Campaign, Mrs Zaghari-Ratcliffe told the judge: "[Gabriella] hasn't seen her father for over two years now". She also asked him to issue a formal diplomatic note protesting against the new charges and invented case against her.
During the hearing she also requested a temporary release, known as a furlough, for Gabriella's birthday next month.
A statement Monday from him says Nazanin Zaghari-Ratcliffe learned of the new charge at a court hearing Saturday before Judge Abolghassem Salavati of Tehran's hard-line Revolutionary Court.
Mr Ratcliffe, who met Foreign Secretary Boris Johnson in March, said he had been "quite cross and vocal" with United Kingdom authorities at points during her long-running case, and was hoping to meet senior officials at the Foreign Office later this week. I don't want to go there again.
There has been a sharp uptick in detentions since 2015 when the deal was put in place with two British-Iranian dual nationals and a third woman who worked for a British cultural organisation held since April.
Asked if Mr Ratcliffe could feel reassured by the attention the Foreign Office was giving to his wife's case, Mr Johnson replied: 'He really can, and to be fair I don't think he would deny that'.
Nazanin Zaghari-Ratcliffe, who is from London, is now serving a five-year sentence in Tehran's Evin prison, having been convicted of spying. She insists she was only in the country to introduce her daughter to her parents, who live in Tehran. I kept thinking, how did I survive without her for 26 months?' "There is a responsibility of the Government, there is a responsibility of the foreign secretary, to protect British citizens".
Richard Ratcliffe, who spoke to his wife after she appeared in the latest trial, said she burst into tears while discussing her daughter, who will turn four in June.
They said her work for charities that train journalists has been used against her even though she has not trained journalists herself.
"The UK Government remains committed to doing everything possible to help secure Ms Zaghari-Ratcliffe's release and alleviate her suffering".
She called for further progress to be made so individuals could be released on humanitarian grounds'.