Melissa Reid, of Lenzie, East Dunbartonshire, is being held in the harsh Virgen de Fatima jail near Lima after she was arrested with friend Michaella McCollum, from Northern Ireland, attempting to smuggle £1.5 million worth of cocaine through the city's main airport.
The two 20-year-olds could spend up to three years behind bars while they await trial and need money to help them buy necessities such as food, clothing and water while in prison. Michaella's Belfast-based lawyers, led by former Bloody Sunday Inquiry solicitor Peter Madden, earlier set up a separate fund.
In a statement, it said he is currently "dealing with urgent matters pertaining to Michaella's situation in Peru and making arrangements for family visits".
A message was posted on a Facebook page set up by Melissa's aunt, saying "So many people have kindly been asking about making a donation to help the Reid family with legal fees and visits to see Melissa.
"I have set up a bank account for this purpose. I know it is a very emotive subject and people have strong opinions against Melissa but could you please respect the fact that some people would like to help and I can't thank them enough.
"Please do not feel obligated to donate as it means the world to us just to have your support."
The women, who met while working as hostesses in Ibiza, were arrested nearly three weeks ago by Peruvian anti-drugs officials.
They claim that they were threatened by gangsters to smuggle the drugs into Europe, but have been denied bail and must now wait for a trial date.
Prosecutors said at a hearing this week that the pair's story was "void" and incoherent, and called for them to be held awaiting trial.
Melissa's father William has travelled to Peru and has been trying to support his daughter by buying her a mattress to sleep on.