About 12.25am, Sunday, 18 December, police received a report that a man had been stabbed inside a house in North West Point Road.
He was taken to the Cayman Islands Hospital in George Town. His injuries are described as nonlife threatening and he was in stable condition Monday morning.
Police said the woman, who is known to the victim, was arrested on suspicion of assault causing grievous bodily harm. She remained in police custody Monday.
Police enquiries into the incident are ongoing.