Police quiz man over Gabi death.
The 45-year-old man had been receiving treatment to a stomach injury.
Gabi Chapman was found injured at her home in Winfield Street, Rugby on Saturday night.
Police were called just after 10.45pm following reports of a disturbance inside. Officers discovered a man and a woman who had both suffered stab wounds. Gabi died on arrival at hospital.
A post mortem revealed she had died as a result of multiple stab wounds.
Anyone with information that can help the police inquiry is asked to call Rugby CID on 01788 541111.