According to the police report, VanHorn offered her children several times on the social network – offering the 10-month old girl for $US1000 ($972), or both of them for $US4000. And she had a taker.

Police believe VanHorn wanted the $US1000 to bail her boyfriend out of jail.

VanHorn was dealing with a woman in Fort Smith, Arkansas, according to The Oklahoman. This means she could be charged with a federal crime because the act would have crossed state borders.

"Just come to Sallisaw, it's only 30 minutes away and I'll give you all of her stuff and let y'all have her forever for $1000," read VanHorn's Facebook message to the Fort Smith woman, as unearthed in the police report by the Daily Dot.

She is being held on a $US40,000 ($38,900) bond. The children are in the custody of the state's department of human services, which alerted the police in the first place.