Woman jailed for killing lesbian lover Published on Thursday 28 June 2012 12:51 A LESBIAN who stabbed her lover through the heart after she taunted her about being "a mummy's girl" was today jailed for nine years. Shazia Johnston, a mother-of-one, stabbed Lisa Ann Quigley, 30, during a row at her Kirkcaldy home on 11 October 2011. Mother-of-one Miss Quigley bled to death and Johnston waited 12 minutes before calling an ambulance for her. Johnston also disposed of the knife she used to kill Miss Quigley and it was never found. Johnston, who went on trial accused of murder was convicted of the reduced charge of culpable homicide under provocation. She was also found guilty of concealing the knife she used to kill Miss Quigley. At the High Court in Glasgow temporary judge John Beckett QC told 25-year-old Johnston: that she had carried out "a callous and calculated" act. Judge Beckett added: "At the age of 30 Lisa Quigley lost her life at your hands. I accept the behaviour of Miss Quigley was difficult that day. She may have pulled your hair and made threatening gestures with a knife towards you. However,, this was a very violent killing. You stabbed her through the heart and she bleed to death. She had defensive injuries to her hands and legs which suggest she was sitting down when she was attacked.. As she lay dying you waited 12 minutes before calling an ambulance. Her injuries were such that they were not survivable, but you did not know that. He said that Miss Quigley's family are devastated by her loss. Johnston was jailed for eight years for the killing and a further year for concealing the knife. Solicitor advocate Gordon Martin, defending, said: "Miss Johnston and Miss Quigley were clearly in love, but their relationship was mutually destructive. She has asked me to express her regret for what happened. In evidence during the trial Johnston said she lashed out to stop an attack on her, but the court was told she suffered no injuries. The couple had a turbulent relationship and their were claims that Miss Quigley thought Johnston was cheating on her with men. The jury heard how Miss Quigley had started yelling at Johnston on the night of the killing. Johnston, who had been bathing a young child at the time, ordered her lover out of her Kirkcaldy flat. Miss Quigley was said to have replied: "You going to get your mummy to help. You are a mummy's girl. Johnston claimed she came into the living room and Miss Quigley was "swirling" a knife in her hand. Johnston said Miss Quigley then grabbed her by the hair and poked the blade towards her. The accused, who was holding the child by this time, told the court she was "really scared" and grabbed another knife that was nearby. She lashed out at Miss Quigley, who fell onto a couch. It was claimed Miss Quigley stormed back up and, in a bid to defend herself, Johnston struck her with the knife. Johnston fled with the child leaving her girlfriend bleeding to death. Johnston showed no emotion as she was led away to begin her sentence.