
The sting operation caught Faridah Himleh, 33, in Ban Na Khuan on the outskirts of urban Hat Yai in Songkhla at 9am.
She’d allegedly agreed to sell two grams to the undercover policeman for Bt2,400.
Other officers were waiting in hiding when she arrived on her motorcycle with the youngster as a passenger.
Police took her to her house in Ban Fa Sai, Tambon Khuan Lung, where 140 methamphetamine pills were found.
Fraidah purportedly admitted that she and her husband had been selling meth for a year, purchasing the drugs from a man she knew only as Ball.
The husband, a painter, was at work at the time of the arrest. He shut off his mobile phone and disappeared.