Discussing Plummer's relationship with her Egyptian husband, Omar Caboo, her sister said the couple had merely signed a document allowing them to sleep in an apartment together.
The trial will reportedly resume when a new interpreter is found.
Laura Plummer, 33, from Hull, collapsed in court after being sentenced to three years in the notorious hellhole Qena prison after being found with 290 tramadol pills in her suitcase.
But, the drug has been placed on a list of Egyptian banned substances since 2015 after it replaced heroin and cannabis as the recreational drug of choice.
Jayne Sinclair says Laura was trying to help her Egyptian boyfriend who was in pain after an accident.
Speaking to the court on behalf of Plummer, the lawyer, said she had no criminal intent in bringing in the painkillers.
This was misunderstood by the judge as an admission of guilt, Bassal told The Telegraph.
Mr Turner, who is Labour MP for Hull East, said he had spoken to Ms Plummer's defence lawyer in Egypt who said she had 60 days to launch an appeal and he expected that she will. "That will be terrible for her, it'll be traumatizing", he said.
"She's on the verge of a mental breakdown". After she was sentenced to three years, she was then put in a cage, like an animal. "She's frightened to death of everything", Synclair said.
"Laura did not know that what she was carrying was a narcotic".
Her lawyer told Sky News that the idea she was a drug trafficker was illogical as she made no attempt to hide what she was transporting.
Plummer's lawyer Mohamed Othman told the BBC he was applying for her to be moved to Qanater prison, which is closer to Cairo, and has "better conditions" ahead of an appeal against her conviction.
"This is a damning indictment of the Egyptian authorities in that good sense and fairness certainly hasn't prevailed". They said her father had already paid out £25,000 to defend his daughter.
A spokesman from Britain's Foreign and Commonwealth Office said: "We will continue to provide assistance to Laura and her family following the court ruling in Egypt, and our embassy is in regular contact with the Egyptian authorities".
"This is a decent woman who has made a awful mistake who shouldn't be incarcerated in any prison, never mind an Egyptian prison".