The victim, identified as Meenu, lived in Sector P3, Kasna SHO Samarjit Singh said.
"Meenu had returned home after visiting a temple this morning. Her husband Amit had gone to a shop and their two children were playing outside while her father-in-law was at temple.
"When children came back and knocked on the door, there was no response," police said.
When Amit reached, he entered the house through a back door and then found Meena's body hanging from a ceiling fan in a room, police said.