Femi lives with Sonya. Femi regularly forces Sonya to give him the money which she earns working as a prostitute. He has beaten her and sexually

abused her on a number of occasions, particularly when he is drunk. One evening, while cooking, Sonya hears Femi stumbling through the front door,

clearly intoxicated. Fearing that Femi will beat her up again and force her to have sex with him, Sonya cuts her wrists. When Femi sees what she has done, he taunts her, saying that she is a pathetic attention seeker. Sonya reaches for the bread knife and throws it at Femi. In trying to avoid the knife,

Femi falls over and hits his head on the floor, rendering him unconscious. Sonya runs out of the house slamming the door saying, 'that serves you right,

you bully, I hope you die.' The effect of slamming the door is to extinguish the

flames on the gas cooker. When Sonya returns Femi is dead, having been asphyxiated by the gas.

Discuss Sonya's potential liability for the murder of Femi and any defences which may be available.