The daughter of the Deputy Speaker of the House Of Commons hanged herself after becoming involved in a “toxic relationship”, an inquest heard.
The hearing was told Natalie Lewis-Hoyle , 28, had been on a night out in London when she received phone calls that affected her state of mind.
She was found dead at her home in Heybridge the following morning at around 6.15am by her mum Miriam Lewis – who is separated from senior Labour MP Sir Lindsay Hoyle.
Mrs Lewis, herself a Tory councillor, gave evidence that an assault on Natalie was reported to police just one month before her death, but no one was arrested.
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She said: “It’s my firm conviction there was an assault….as the relationship was really deteriorating.
“It was a very toxic relationship…
“When someone is in psychological torment you don’t get the bruises and fat lips and black eyes.”
Speaking about the phone call on the night of Natalie’s death Mrs Lewis added: “It is my firm belief that what was exchanged in that phone conversation contributed to the actions she took that evening.
“I accept that the way the law stands at the moment, there’s no third party involvement but it’s not something I am going to be able to put out of my head.”
The hearing was told parish councillor Natalie had been struggling with a relationship that was coming to its end.
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She went out drinking in London the night before her body was found on the morning of December 15 last year.
Mrs Lewis, who sits on Maldon District Council, had picked up her daughter from the station and driven her to their shared home in Heybridge, Essex.
A toxicology report revealed Natalie was more than twice the drink drive limit at the time of death.
The identity of the person who telephoned Natalie was not disclosed at the inquest in Chelmsford, Essex.
MP Hoyle, Labour MP for Chorley, Lancs, gave evidence saying: “She wasn’t a person that ever said to me that she wanted to take her life.
“She was a person that loved life, she was life, she brought life to everybody that lived it.
“Obviously no one can judge what was in that phone call, we know there was a reaction to that phone call, that something happened following that.
“I don’t know where that takes us with third party involvement.
“We know there was third party involvement with that phone call that left them in a different state of mind.”
However, Detective Inspector Gary Biddle, told the inquest: “There’s no suspicious circumstances as far as Essex Police are involved.”
MP Hoyle attended the inquest with his wife while Miriam was accompanied by her partner.
Senior Coroner Caroline Beasley-Murray recorded an open verdict.
She said: “We don’t have all the bits of the jigsaw…We’ll never quite know what was going through her mind.
“She clearly was much loved. I hope you will be able to think back on all the happy positive memories.”