The woman was arrested for killing her 45-year-old husband, a resident of Maruti Palasia colony, last night, Chandan Nagar police station Inspector Vinod Dixit said.
The inspector said the man, last night, allegedly tried to rape his 20-year-old stepdaughter. The enraged woman then killed him with an axe.
The body has been sent for postmortem and further investigation in the case is on.