Mother, 27, posted nude photos of her daughter, 11, online and let menhave sex with her

The Missouri woman, who's name is being withheld to protect the identity of her daughter, was arrested Thursday 

She was charged with endangering the welfare of a child and promoting a sexual performance by a child

She would invited men that she met online to her trailer home off Highway 8 in Steelville, Missouri to have sex with the middle-school-aged girl

Police expect to make more arrests when they identify some of the men involved

This Missouri woman has been charged for allegedly selling her daughter for sex and posting nude pictures of the 11-year-old online

Police siezed cell phones and computers from her home and say they expect to make more arrests when they identify some of the men involved. 

The woman had been using social media to sell her daughter for sex, according to police. She would send nude pictures of her daughter to men she met online and in exchange, the men would send photos back along with money, The Missourian reported.  

The mother would also invite some of the men to her trailer home off Highway 8 in Steelville, Missouri to have sex with the middle-school-aged girl. 

The woman's sadistic sex operation was outed when teachers found sleeping pills in her daughter's backpack at school, according to KMOV. 

When asked where she got them, the girl said her mother had given them to her.

The mother apprently admitted to police that she gave the pills to her daughter. She also allegedly admitted to selling nude photos of the girl and allowing men to have sex with her. 

If convicted, the mother could get 14 years in prison. 

The girl's grandfather says he's glad the mother is locked up. 

'She's right where she belongs,' he said, adding that he hopes the men involved are also apprehended. 'I hope they get him too and I hope he’s sitting beside her and I hope they are both in there for awhile.'