The girl took the extreme step on Wednesday.
She has suffered 90 per cent burns and is battling for life in the district hospital here, police said today.
The girl was allegedly raped by two youths - Sonu Seharia (23) and Sonu Sen (20) - on March 26 and they asked her not to inform about the alleged offence to anybody.
Later, her mother took her to Barkhedagird Police Station for filing a report, but the police did not take any action in the matter, the victim's family alleged.
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Yesterday, Guna Superintendent of Police (SP) K C Jain rushed to the village following which one of the accused was arrested by the police while the other one was nabbed today.
Inspector General (IG), Gwalior Division, Adarsh Katiyar also visited the victim at the hospital today and reviewed the progress made by police in the case.
Meanwhile, Leader of Opposition in Madhya Pradesh Assembly, Ajay Singh, today said in a statement that the incident has exposed the state government's "shameless face" as incidents of rape and gang-rape continued unabated in the state.