Kelsey’s mother, Christin Johnson, posted pictures of her devastated daughter on Facebook, alongside an earlier picture of her new hairstyle.
The post read: “This is what my daughter looked like Sunday when I took her home and the other two pics is what happened today before she was brought to me… all over me having highlights put in her hair for her birthday!”
According to Haskins police chief Colby Carroll, they, along with children’s services, are investigating a complaint of potential child abuse.
Ms Johnson alleges Kelsey’s father and step-mother ordered Kelsey to cut her hair as punishment.
The couple, who are both firefighters, have been put on leave pending further investigation.
Middleton Township fire chief Steve Asmus said the couple had been on the staff for about two years and that he had never received a complaint regarding their work, according to Fox 8 news.
Kelsey’s mother set up a fundraising page but it has now been removed from Facebook.
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It is not clear what the funds were intended for, but comments on social media suggest it is for legal costs involved in fighting for custody of Kelsey.
Ms Johnson later posted images of her daughter with long hair after sending her to pick out a new wig, saying: “She got her smile back.”