Thirty-three-year-old Elizabeth Roeder of Milwaukee and 41-year-old Shannon Hathaway of Stoughton each face felony charges.
An officer from the Cook County Sheriff's Department responded to an ad of a website.
The undercover officer was sent to a motel in River Grove. Once inside, the officer was offered sex in exchange for money. That's when an arrest was made.
The arrest led officers to Roeder and Hathaway, who placed the ad on the website.