South Wales Police launched an investigation in June after being made aware that two 17-year-olds from Cardiff had been arrested in Thailand.
The investigation focused on the circumstances that led to the teenagers travelling abroad.
Carrie-Anne Dreyer, 39, from Llantwit Major, has been charged with conspiring to fraudulently evade a prohibition on the importation of a class B drug.
She also faces four counts of conspiring to arrange or facilitate the travel of another person with a view to exploitation.
Dreyer has been remanded in custody and is due to appear at Cardiff Magistrates’ Court on Thursday, September 3.
A spokesperson for South Wales Police said: “A seventh person has been charged in connection with an investigation linked to two Cardiff children arrested in Thailand.
“In June, South Wales Police was made aware that two 17-year-olds from Cardiff had been arrested in Thailand.
“An investigation commenced into the circumstances which led to the children travelling abroad.
“As a result of the investigation, which is on-going, we can now confirm: Carrie-Anne Dreyer, 39 of Llantwit Major, has been charged with conspiring to fraudulently evade a prohibition on the importation of a class B drug and four counts of conspiring to arrange or facilitate the travel of another person with a view to exploitation.
“Dreyer is remanded in custody to appear at Cardiff Magistrates’ Court tomorrow (Thursday, September 3)”.
The two teenagers remain in custody in Thailand and are being supported by their families and the Foreign, Commonwealth & Development Office.
South Wales Police said the families have been updated about the latest arrest and charge.
A police spokesman said: “We understand this continues to be a concerning time for them and wider community.”
Dreyer is the seventh person to be charged as part of the ongoing investigation.
The other individuals previously charged and who have already appeared in court are Jessica Sani, 28, from Newport; Tremaine Jeanne, 28, from Llanrumney; Levi Mohamed, 20, from Butetown; Patrick O’Driscoll, 30, from Caerau; Gareth Press, 42, from Ely; and Ffion Bowes-Cavanagh Hooley, 24, from Caerau.
Enquiries remain ongoing.
