I am fat, ugly and worthless. I am nothing': Diary reveals bleak thoughts of 15-year-old ballet dancer before she threw herself in front of a train Tallulah Wilson attended £11,000-a-year St Margaret's School in Hampstead Her dance teacher said she was 'gifted' and had a great sense of humour The teenager took her own life after becoming obsessed with images of self-harm on the internet Police described her diary as described as 'dark', 'sad', and 'bleak' The diary of 'gifted' ballerina Tallulah Wilson, who threw herself in front of a train, has been described by police as 'dark and sad' A talented 15-year-old ballet dancer who threw herself in front of a train had repeatedly described herself as 'fat', 'ugly' and 'worthless' in her private diary, an inquest heard today. The diary of schoolgirl, Tallulah Wilson, was found by transport police who discovered her body at St Pancras railway station. It gives a harrowing insight into the troubled mind of the teenager, who wrote 'I am fat' on one page with another entry saying: 'what am I? You are nothing. In another document she had scrawled 'worthless' several times, followed by a page with 'ugly' written in large black-ink. The hearing at St Pancras Coroner's Court in North London was told how Tallulah had become obsessed with images of self-harming on the internet after being bullied online. The diary entries were revealed after the court heard yesterday that Tallulah had become so obsessed by the internet that she had created a fantasy cocaine-taking character in order to escape reality. Det Sgt Adrian Naylor, who deals with fatalities for British Transport Police, said computers and diaries removed from the family home revealed 'disturbing writing relating to self-loathing and self-harm'. He added: 'We couldn't identify if any of the images were of Tallulah, but one was named 'my arm' and in an exchange with a like-minded individual, she was asked 'are those pictures of you?' and Tallulah replies 'yes'. It was alluded to [that she wanted to kill herself] on several occasions. It was alluding to her saying she didn't want to be here and things like that. The diary and journal are much the same thing. It is pretty dark, pretty sad and pretty bleak. She had written 'I am fat' repeatedly, over and over again.' The court heard how the teenager, who died on October 14 2012, would go online and post pictures of her self with self-inflicted cuts. Tallulah, who lived in the leafy north London suburb of West Hampstead, moved to the £11,000-a-year St Margaret's School in Hampstead a month before her death after being bullied at St Marylebone school in St Pancras. The teenager moved from St Marylebone School in St Pancras (pictured) after suffering at the hands of bullies The head of pastoral care at St Marylebone claimed she had never complained to staff about being bullied, but had shown the nurse her self harming wounds and was known to have posted pictures of self-harm on the internet. Lindsay Ancock said the schoolgirl had counseling after feeling 'anxious' about her weight. It seemed that somebody had called her fat. I thought it was another student at the dance school but I was never completely clear on that. She continued: 'Tallulah certainly wasn't a shrinking violet. There were two sides - we saw the confident Tallulah when she was dancing but when she came to us she was low, but most of what we saw in school was the lively, engaged young person. Her dance teacher, Peter Laycock, told the inquest that she was the most confident pupil and talented ballerina when she began her GCSE in dance in January 2012. He said that she began to change the following month, adding: 'She began as very outgoing and well liked, she was the leader of the group. Because Tallulah was naturally very gifted at dance she also had a brilliant sense of humour and in many ways she was the most able member of the group. Initially, when the course began, Tallulah started out as really one of the more gregarious characters in a very positive way. He continued: 'I knew that the other staff noticed a change in Tallulah after the February half-term break, I actually contacted Sarah by email, I was concerned that she was losing motivation or that she wasn't happy on the course. Tallulah moved to £11,000-a-year St Margaret's School in Hampstead (pictured) a month before her death 'She seemed to have started in a positive and enthusiastic way - it wasn't after that February half-term break that she was difficult or that there were many other concerns, I just felt that she didn't have the same spark.' He said that one week before her death she seemed to be in a better frame of mind. 'She left the session after the students were creating performances for assessment which actually wasn't for months,' he said. She had done some brilliant work with a student she was particularly close with in sessions. 'I know the following week that the student was quite annoyed that Tallulah wasn't there initially. 'Tallulah had said to her "I'll see you next week - I can't wait to continue"'. He said he struggled to reconcile the contrast between her confidence in dance school and her private writings. For confidential support call the Samaritans in the UK on 08457 90 90 90, visit a local Samaritans branch or click here for details.