The teenager was harassed and beatenup by two women in her neighbourhood, Saroj and her daughter Guddi, in Malawan Kotwali, following which she committed suicide by setting herself on fire on December 19, they said.
The girl was undergoing treatment in a hospital, where she succumbed to her injuries.
An FIR has been lodged by the girl's father against the two women yesterday, police said.
No arrest has been made so far in this connection, police added.