The fiance of accused drug mule Cassandra Sainsbury hopes to travel to Colombia soon to see the 22-year-old.
Scott Broadbridge says Ms Sainsbury is finding her situation "extremely stressful".
"She is concerned about the conditions of the jail which are not ideal and it is very difficult for her not knowing anyone in the country," he said.
"I hope to get over there soon and I hope that we are able to prove her innocence.
"Cass is the delight of my life. I know that she is not involved in the drug trade.
"I know that she was not deliberately taking drugs or carrying drugs."
Ms Sainsbury's Australian lawyer Stephen Kenny is exploring the "full details of why she went to Colombia, how she got there and who paid for her ticket."
Mr Kenny said an issue of "some significance" was the name of the cleaning company the woman was said to be working for at the time of her arrest, which is something under investigation.
Ms Sainsbury was detained at El Dorado International Airport on April 12 after 5.8 kilograms of cocaine was allegedly found hidden inside 18 headphone boxes in her suitcase.
She is being held in Bogota's El Buen Pastor women's jail and reportedly told a Colombian lawyer that she was tricked and given the headphones by a man she knew only by Angelo or Tom.
The man offered to buy her the headphones for a cheap price and brought them to her at the airport.
