Police also accused her of forcibly taking away the passports of three women.
Irene was presented before Metropolitan Magistrate Chetna Singh Friday and remanded in one day's police custody.
Police said her custodial interrogation is required to bust the syndicate that is allegedly forcing women into prostitution. Police are also looking for others who are involved.
Meanwhile, the arrested Ugandan woman's counsel R.K. Yadav told IANS that statements of two women were recorded but the third woman's could not be recorded as a translator was not available and the woman was not well versed with either Hindi or English.
The three women earlier this week approached the Delhi government for help and said they were victims of the alleged sex racket.