A woman died after stabbing herself in the heart while high on laughing gas following an argument with her new girlfriend, an inquest heard.
Tanya Callaghan, 31, self-inflicted a fatal wound while in a house full of friends after a night of drinking and consuming nitrous oxide.
Her mood quickly darkened after a disagreement and she was heard saying "it’s okay, you can have the flat to yourself" before storming into the kitchen.
Miss Callaghan held a knife to her own throat and then stabbed herself despite the best efforts of her partner to calm her down.
She was rushed to hospital but died of her injuries eight days later.
The hearing was told Miss Callaghan, a receptionist from Manchester, had been dating Deseree Fitzpatrick in the weeks leading up to the accident on May 6 last year.
Mutual friend Niamh McLoughlin said ‘everyone was getting on, the atmosphere was giddy on the night of the incident, but Tanya became upset after an argument.
She told the hearing: “She sounded out of her head when she said this and it didn't sound like her. It was like it was not her that was speaking.
"I then heard Deseree say 'get that out of your hand' in a panicked voice and then say: 'she has stabbed herself.'
“I was shocked and said 'what', stood up and ran to the kitchen. Tanya was against the sink holding herself under her rib cage.
"Her hands were on her chest together. Brooke and Deseree were both in the kitchen saying that Tanya was going to be alright.
“It was like Tanya did not know what she had done to herself, she looked confused.
"She was stumbling around the kitchen and the colour drained out of her face and she collapsed. Me and Deseree had hold of her and could see she was bleeding.
"I didn't see her holding a knife at any point. She was bleeding significantly. An ambulance was called and we tried to do all we could to stop the bleeding. Deseree was very stressed and upset."
The hearing was told Miss Plummer and Miss Fitzpatrick were both arrested on suspicion of causing grievous bodily harm but were later freed without charge.
Detective inspector John Robb, of Greater Manchester Police said both women gave ‘a full and consistent account’, adding: “There was no suspicious circumstances and no one else involved."
He told the inquest Miss Callaghan had held a small knife to her throat when Deseree said she was leaving but managed to convince her to put it down.
The inspector added: "But unbeknown to Deseree, Tanya had another knife in her other hand and quite suddenly turned and stabbed it to her abdomen.
“The colour drained from her and she said nothing as she slumped to the floor. People present tried to aid her.”
Miss Callaghan was rushed to hospital for emergency heart surgery but suffered internal bleeding from a 5cm wound which penetrated the heart.
The hearing was told she had previously been diagnosed with an emotionally unstable personality disorder but had been reporting better and more stable moods.
Recording a narrative verdict Manchester coroner Nigel Meadows said: "Clearly, she was upset by events and unfolded in an argument but I am not satisfied she intended to end her own life."
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