Lynn Cameron. (Campbell County Sheriff/HO)

No charges will be laid against an Illinois mother who left her special-needs daughter at a Tennessee bar, then refused to take her back.

Lynn Cameron, 19, was left at the Big Orange Bar on June 28 after her mom let her out of the car to use the washroom.

But instead of waiting, Eva Cameron left her daughter there, the Knoxville News Sentinel reported. The young woman has a limited vocabulary and was unable to tell police in the small town her name or address.

Police said Lynn Cameron was left without money, a change of clothes or any ID.

On Tuesday, Eva Cameron, who is from the Chicago area, returned to the town of Caryville, located 50 km north of Knoxville, to talk to police.

"She said she just couldn't handle her anymore," assistant police chief Stephanie Smith told the newspaper.

Police said even though she has the mental capabilities of a 2-year-old, because Lynn Cameron is 19, she's considered an adult.

Eva Cameron returned home on Tuesday without her daughter. Lynn Cameron is now in the custody of the Tennessee Department of Human Services.

Campbell County assistant district attorney general Scarlett Ellis told the newspaper while it may not be a "good moral decision ... I guess you don't have to keep your adult daughter if you don't want to."