The woman's face was blackened and chilly powder allegedly thrown in her private parts to "punish" her, they said.
It was only when her husband ran to the villagers for help, the woman was rescued and police informed.
Kheri SP Akhilesh Chaurasia said the son of the aggrieved woman had eloped with a girl from the accused family yesterday which became a matter of dispute between them.
Both the families belong to the same village.