Miss Culley initially went missing in Thailand before being arrested at Tbilisi International Airport on 10 May.
It is understood she arrived on a flight from Sharjah, in the United Arab Emirates.
Georgian Police said officers seized narcotic drugs from a travel bag.
Miss Culley was detained for months while the prosecution investigated where 12kg (26lbs) of marijuana and 2kg (4.4lbs) of hashish came from, and whether she was planning to hand them over to someone else.
At a hearing in July she pleaded not guilty to charges of possession and trafficking illegal drugs and claimed she had been “forced to do this through torture”.
“I just wanted to travel,” she said. “I am a good person. I am a student at university. I am a clean person. I don’t do drugs.”