The grieving family of an NHS worker stabbed to death at a psychiatric hospital has paid tribute to the victim as "nothing less than one in a million" as a man was charged with her murder.
Health care assistant Sharon Wall, 53, died after being attacked during an incident at Wotton Lawn Hospital in Gloucester on July 9.
Gloucestershire Police said Ryan Matthews, 61, of Horton Road, Gloucester, has been charged with her murder and will appear before magistrates in Cheltenham tomorrow.
Matthews was arrested shortly after the incident at an inpatient unit at the hospital.
Ms Wall, from the Tuffley area of the city, was attended to by fellow clinicians before being taken to Gloucestershire Royal Hospital.
She died from her injuries an hour after being stabbed.
In a statement, her family said: "We would like to thank everyone for their support and such kind words that have been said about Sharon.
"She was nothing less than one in a million and to say that she will be missed is an understatement.
"We would ask for people to respect our privacy and allow us to grieve for her at this difficult time."
Police were continuing to investigate the incident and appealed for anyone with information to contact detectives.
Shaun Clee, chief executive of 2gether NHS Foundation Trust, said: "We are all deeply shocked by the tragic incident that occurred on one of our inpatient wards.
"The extremely sad event, which resulted in the death of a highly compassionate and dedicated colleague, has had a profound impact on everyone working in our trust.
"Sharon Wall was a well-respected healthcare assistant and everyone who knew her speaks about her warmth, caring nature and good sense of humour.
"She will be deeply missed by colleagues and the service users she supported.
"We are still in the early stages of the investigation and continue to assist Gloucestershire Police in their work.
"Above all, our thoughts remain with Sharon's friends and family. On behalf of colleagues across our trust, I extend our most sincere and deepest sympathies."
Workers at Gloucestershire Royal Hospital, on the same site as Wotton Lawn, have spoken of their "shock" at the incident.
Denise Luckman, 44, an admin assistant at the endoscopy unit, said: "I've worked here for 10 years and nothing like this has ever happened.
"It has been a huge shock to everybody. You don't expect to go to work, to care for patients, and to have that happen.
"It has affected the hospital all the way through. It is on our own doorstep, it has come as a complete shock."
Mrs Luckman said staff across the hospital often worked in different units to help short-staffed wards, including Wotton Lawn.
"All the staff are very subdued," she added. "It just shows that these things can happen."
People have paid tribute to Ms Wall on social media.
Tania Daniels wrote on Facebook: "I'm in shock. My thoughts are with your family. RIP lovely lady. I'll remember the times you came to my house years ago we had some good laughs and chinwags."
Anastasia Stacie Shields wrote: "She was an amazing lady. It's a real tragedy."
The 2gether website said Wotton Lawn Hospital was an 88 bed acute mental health hospital near the centre of Gloucester which provided inpatient services for the county of Gloucestershire.
The hospital has four admission wards, a nurse led psychiatric intensive care unit (PICU) and a low secure unit (LSU).
It said service users were supported by a variety of healthcare workers including nurses, doctors, psychologists, art therapists, physiotherapists, occupational and sports exercise therapists.
Health Secretary Jeremy Hunt said: "The events in Gloucestershire are devastating and our thoughts are with the family, friends and colleagues of the staff member involved."