This is the horrific moment a schizophrenic woman pulled a knife from her bra and launched a 'ferocious' attack on a grandmother walking home from bingo.Harrowing CCTV shows door staff shouting 'watch out behind you' as Natasza Zakrzewska raised a kitchen knife above her head and plunged it into a stranger's back in Dover town centre.The 47-year-old carried out the 'random and ferocious' assault on the night of January 17 as the unsuspecting victim made her way home along Biggin Street after a night at bingo.Zakrzewska pulled the large kitchen knife from her bra, stabbing the grandmother five times, who had just collected £300 in winnings, before being wrestled by brave door staff, who removed the weapon from her grip.The victim was saved only by the thickness of her coat and the 'exceptionally brave' actions of nightclub door staff who wrestled the weapon from her attacker's hand.The grandmother said she initially thought the attacker, who she described as looking 'dead behind the eyes', had simply punched her, but went on to say it had a profound impact on her, describing the past eight months as 'unbearable'. Zakrzewska, a paranoid schizophrenic, has now been detained indefinitely under the Mental Health Act after a jury found she had 'done the act' but was unfit to stand trial.The shocking attack happened just after 10pm when CCTV captured Zakrzewska pulling the blade before rushing towards the grandmother.The moment brave bar staff confronted Natasza Zakrzewska after she stabbed the grandmother in Dover Judge Simon James praised the team's bravery, saying their intervention almost certainly prevented a killing Door supervisors Ben Pilott, Thomas Endersby and Valkyrie Lawless ran to help, tackling Zakrzewska as she continued to struggle and attempting to prise the blade from her grip.Seconds earlier, two terrified teenage girls had raised the alarm after the 'stumbling and slurring' Zakrzewska threatened them with the blade as they walked home from the cinema.Door staff at the nearby Dizzy Donkey club were helping the 'hysterical' girls when they spotted the woman marching towards them.Door supervisors Ben Pilott, Thomas Endersby and Valkyrie Lawless ran to help, tackling Zakrzewska as she continued to struggle and attempting to prise the blade from her grip.Prosecutor Michael Hillman told Canterbury Crown Court: 'Fortunately, the door staff, who had put the teenagers inside the club for their protection, had seen what was going on - had seen the defendant and the attack - and rushed over and grabbed the knife, preventing her from continuing this attack.'They were able to disarm her, all the while the defendant continued struggling with them.'Mr Hillman added that without the door staff's quick thinking, the attack 'would easily have proved fatal'.Among the victim's injuries was a large stab wound to her back, which required treatment at London's King's College Hospital. At the time, she was described by police as being 'conscious, calm and in good spirits'.She said she had not heard any approaching footsteps, and said she felt something like a tap on the shoulder, and she briefly thought it was someone alerting her to having left something behind at bingo.She said: 'Quickly I realised this was not the case and I felt I was being punched. I then felt a bit of sharp pain but I didn't know what it was,' she explained.'I turned round and there was a female - I looked at her face and she looked dead behind the eyes.'She was just focused on my back area where she was assaulting me. It felt like I was punched and hit three or four times. The female didn't say a word.'She said the attack has been 'truly devastating', describing the past eight months as 'unbearable'.She revealed that not only does she suffer from ongoing pain and nerve damage, which impedes full use of her arm, but she has also been diagnosed with PTSD and left questioning whether she wanted to continue living.Describing herself as 'terrified', she added: 'She [the defendant] lives in my everyday. Words will never begin to explain the impact this woman has had on me.'It was an exceptionally callous act. Even after she had been stopped from stabbing me, she wanted to finish the job.'Without the people there in that moment, I strongly believe I wouldn't be alive now. I am endlessly grateful to them.'It is the kindness they showed me that I will forever remember.'With the jury having heard the prosecution's case, watched the CCTV and been told that the evidence was not disputed, defence barrister John FitzGerald simply explained it was his role to 'protect the interests' of the accused.Judge Simon James praised the team's bravery, saying their intervention almost certainly prevented a killing.'Had they not bravely done so, it appears you were intent on killing your victim,' he told Zakrzewska.Judge James said Zakrzewska had a long history of not taking medication and that her condition was made worse by alcohol and amphetamine abuse. She is to be detained in a secure psychiatric unit until she is no longer considered a danger, he added.'Had it not been for your diagnosis,' he said, 'you would have been handed a lengthy prison term.'The judge also recommended Mr Pilott and Mr Endersby for the High Sheriff of Kent Awards for their courage, which recognises selfless individuals, voluntary groups, and public servants for their significant contributions to communities in the county.Speaking to KentOnline after the hearing, Mr Pilott recalled the moment he and the door staff grabbed Zakrzewska.'As I was trying to get the knife out of her hand, it was slowly dropping toward my wrist,' he said.'Just as it made contact with my wrist, I managed to snap the blade from the handle.'Luckily, it was one of those large kitchen knives with a plastic handle. If it was the other kind that is all metal, I hate to think what could have happened.'He added: 'I have worked in a number of venues with a large number of different door staff over the years and the bravery and professionalism shown by the team that night was amazing. They are a real credit to the security industry.'Mr Pilott and the three door staff are all understood to have been nominated for police public bravery awards.