The parents of a woman stabbed to death at her home have paid tribute to their "beautiful, but modest" daughter.
Miss Braham was found stabbed to death at her family home
Lucy Braham, 25, whose father is Harrow School's art director, was found at her family home in Harrow-on-the-Hill, north-west London, on Thursday night.
Her family said "her death flies in the face of all that is decent" and that she would be greatly missed.
William Jaggs, 22, who was found with stab wounds, has been arrested but is too ill to be questioned, police said.
Officers were called to the house in Petersham Road at about 2225 BST on Thursday where they found Miss Braham with stab wounds to the chest and abdomen. She died at the scene.
Mr Jaggs, who is the son of another teacher at the school, remains in a serious but stable condition in a west London hospital.
It is thought the pair knew each other but were not in a relationship.
Miss Braham was a fashion student and had been designing and making clothes and accessories in her studio at the family home.
A statement released by her family said: "Lucy was quiet, calm and graceful.
"She had a circle of very close friends and a warm and generous smile that touched everyone she met.
"It is the cruellest tragedy that someone so gentle should have had her life snatched away so senselessly."
The statement added: "Lucy was a stunningly beautiful young woman, but modest. It is an irony that someone so dismissive about her looks, who disliked being photographed, should have her face in every national paper."
The property is yards from the school entrance
They said Lucy had no social connection with her attacker or his friends.
Miss Braham's grandmother, who lives in Bridgwater and did not want to be named, said: "She was such a lovely creature that I find it hard to do justice to her in words.
"She was a quiet, thoughtful child who channelled all her energy into her creative side and she was starting to produce the most wonderful things."
It is understood that Miss Braham's parents returned from a night out to find a police cordon around their Victorian house.
A knife was found at the property which is close to the entrance to the all-boys private school, which caters for 800 pupils.
Len Green, director of art at Millfield school in Somerset, where Miss Braham attended between 1997 and 1999, said he was devastated by the news.
"Lucy was a very talented artist. She was also a lovely, warm and friendly person; a very popular girl.
"She was passionate about art and had a very promising career in front of her," he said.
Mr Jaggs is believed to be the son of a design teacher at Harrow School and a student at Oxford University.
A spokeswoman for Harrow School said: "Residents of the Harrow community are deeply shocked by this tragedy."