In her victim impact statement, which she read out in court, Hannah Pearson's mother, Dawn Pearson, said her daughter was beautiful and had excelled in every way.
Dawn Pearson's statement in full: "Hannah was killed on July 23, 2016. She was my youngest daughter and was only 16 years old at the time, she was still a child.
"The most precious thing in any parent's life is their child. To have your child's life taken away by the horrifying act which was carried out is incomprehensible to imagine.
"Hannah was the most beautiful daughter you could ask for. She was the youngest of my three children and her older brother and sister doted on her.
"Hannah's childhood years were the happiest, growing up on the family farm there was plenty of outside space to explore whilst playing and spending time with her big brother and sister.
"Hannah excelled in every way. During her primary years, she attended the local village school where she was very highly looked upon by her teachers. Hannah loved sport and became the head captain of her school. She was full of life and zest.
"When Hannah was 11 she developed anorexia and for the next four years she was in and out of hospitals. This was an incredibly difficult time for all of us.
"Hannah underwent treatment at a hospital in London where she was an in-patient for two-and-a-half years. We missed our baby girl dreadfully so we used to travel down every weekend to visit and support her. Sometimes we would even take the pet dog and cats so Hannah could see them too.
"Hannah reacted well to treatment, she started getting better and began to get her life back when she came home in June 2015. She went back into education and sat her GCSEs.
"Hannah made many friends and lived her life to the full after being in hospital for so many years. She had been given a whole new lease of life, a second chance at life, and she was making the most of it.
"Hannah was intending to start college in Lincoln where she going to work towards a career in helping others in mental health. This was her passion. Hannah had bounced back with a real enthusiasm for life and everything in it.
"Wherever Hannah was, there was always music. You knew which room Hannah was in as there would always be music playing. Hannah lifted our house with her presence, being back home with her family again. I miss her desperately and I miss her music.
"Grandparents had their granddaughter back, and Hannah became an aunty last year. Hannah doted on her niece. Her niece will never get the chance to get to know her aunt; she will only ever hear our memories of her, our stories of her. She will have no memories of her own.
"Hannah's death has affected so many people's lives, not just our family. The hospital staff where she was an in-patient; friendships she made along the way; teachers, pupils and other medical teams that worked with her are all so shocked to hear of her death.
"She touched so many people in her short life. Living in a village, everyone knows everyone. Hannah's death has been felt throughout the village, and by everyone.
"This was reflected in the amount of people who came to Hannah's funeral to show their respects. A funeral we never thought we would have to arrange, for a daughter we didn't expect to die.
"The loss and pain we are all experiencing is indescribable. Hannah was with us, Hannah was happy; Hannah went out one day and never came home.
"To have the police knock at your front door and tell you your daughter has been killed is a parent's worst nightmare. This is the nightmare we are living with every single day.
"There aren't enough words to be able to describe the shock, the pain and the huge loss that we feel. Since Hannah died I have not been able to go to Newark. Knowing this is where Hannah was killed, it is too painful.
"There are so many things that we can no longer do. Things Hannah loved doing, places that Hannah loved going to, they just remind us that Hannah cannot do these things anymore, and we can never do these things with Hannah again. We can no longer go to Nando's in Lincoln. We used to have meals there with Hannah. It is still too raw.
"I recently went on a coach trip with some friends to London. The coach went past areas we had been with Hannah when she was receiving treatment - the pain just engulfed me.
"I can't even bring myself to drink Diet Coke or Pepsi. That was Hannah's drink. She loved it.
"My husband Peter has lost his baby girl. He'll never be able to walk her down the aisle, or see her have children, our grandchildren.
"He keeps everything inside. He's only managed to go to Hannah's grave twice so far. It's just too hard for him to deal with, and too painful.
"Our son David has had his little sister taken away from him. He still can't face up to what has happened and is struggling to deal with his emotions.
"Our daughter Kathryn has lost her sister, aunt to her baby daughter. This was her daughter's first Christmas. A time of life which we were looking forward to, was meant to be so special and memorable. Five months after Hannah was killed, it was Christmas. It was not the special, memorable time that we wanted for Hannah's daughter.
"On top of the huge emotional effect of losing our daughter, we have also suffered financially. We have had to pay for funeral flowers and a wake. This is something we thought we would never have to do for one of our children.
"A parent should not have to bury their own child, a child who has not the chance to live a life of their own.
"We've had to cancel Hannah's passport, life insurance, and notify her banks. Our child benefit has also stopped. These were all things we never thought we'd have to do, things we didn't even know where to begin sorting out.
"The hurt and pain we feel is indescribable, the physical pain we feel in our hearts is suffocating. We so desperately want to see her walk through our front door again, see her beautiful smile, but we can't. She has been taken away from us in such a cruel and vicious act. As a family, we have a constant ache in our hearts.
"The words in this statement go nowhere near to describe the joy and happiness that Hannah brought to our lives.
"Hannah's life was stolen from us on July 23 last year in a shocking and terrifying event that should not have happened. The joy and happiness that Hannah brought to our lives has been replaced by pain and grief, something we all feel.
"Words cannot describe how difficult and painful this whole experience has been, the trauma of knowing someone else is responsible for the death of your child, and having to go through the incredibly difficult and emotional experience of a trial.
"Our lives have been changed forever by the actions of someone else, and this pain will always be with us without Hannah."