Liora Rosenberg, the 20-year-old whose plight had been followed by thousands of well-wishers around the world, has died.
The former JFS pupil had suffered a bleed to the brain and pneumonia and had been critically ill in hospital for more than a week .
Her death was announced late on Saturday night on the Facebook group set up for people to do a mitzvah in her name.
More than 14,500 people had joined the group and followed news of her condition since April 21.
Thousands pledged to do mitzvahs in Liora's name and raised more than £20,000 for the Hatzola ambulance service on a special JustGiving page.
Liora's parents, who are members of Hendon United Synagogue, had maintained a bedside vigil as she lay ill at the Royal London Hospital.
On Friday and Saturday, shul goers in Hendon were given updates by Rabbi Mordechai Ginsbury, who led special prayer services. The community said tehillim together to pray for Liora's recovery.
A family friend said a religiously observant senior lawyer had been assisting the family as Liora's parents fought to have her medical treatment continue.
A series of meetings had taken place last week as the family pleaded with doctors not to take the teaching assistant off life support.
It is understood a court hearing took place on Friday to discuss how long her treatment should continue.
The friend said the level of halachic oversight in Liora's case had been "unprecedented" in this country.