The deceased has been identified as Sunita Devi, a housemaker. A case of murder has been registered but no arrest has been made so far as the accused too are admitted in the hospital.
The incident took place around 9 PM yesterday when children of the two families, who are neighbours, were bursting crackers. An argument broke out among them which snowballed into a scuffle.
Soon elders also joined in and after a fist fight, both the parties resorted to stone pelting, police said.
"Locals told us that the families had a long-standing tiff. At least 10 people from both sides were injured, of which the condition of six was critical. The woman succumbed to her injuries during treatment," Deputy Commissioner of Police (Outer) Vikramjeet Singh said.