Two people whose bodies were found in a river on the Norfolk Broads have been named.
Detectives investigating the two deaths have confirmed that the woman was 49-year-old Annette Creegan, from Mitcham, Surrey.
She was discovered in the water close to her partner, named locally as John Didier.
Ms Creegan had worked as a community nurse for the Trinity Hospice charity in Clapham Common, south west London, for more than 13 years.
Anne Hooper, the hospice's chief executive, said: "She was devoted to improving the lives of her patients and ensuring they could remain at home if they wished.
"She has made a difference to so many people and will be sorely missed by all who knew her."
Mr Didier is said to be an NHS worker who has family links to Arkansas in the US.
His body and that of Ms Creegan were found in the River Bure on Sunday afternoon.
Ms Creegan's 13-year-old daughter was found alone on a rented boat nearby.
Post-mortem results show Ms Creegan was dead before entering the water, probably as the result of strangulation.
Mr Didier died of drowning, but officers are investigating the possibility that another factor, such as a deliberate overdose, contributed to his death.
Water in the area where the body was found is shallow and it is thought unlikely that Mr Didier died as a result of drowning alone.
The couple had been holidaying on the Norfolk Broads with the girl.
She was found alone but unharmed on the boat on Saturday after a hire company reported that it had not been returned on time.
Norfolk Police confirmed she had been interviewed but would not disclose details of her ordeal.
A spokesman would not comment on whether she had been locked on board, unable to raise the alarm but it is understood she was cared for and fed throughout last week.
She is now being looked after by family.
The spot where the boat was moored is isolated and away from official stopping places. It is surrounded by wood and marshland with no access by land.
Further forensic tests will be carried out on the woman's body.
Detective Superintendent Jes Fry, of the joint Norfolk and Suffolk major investigation team, said: "Our concerns remain for the welfare of the 13-year-old girl.
"We are not looking for anyone else in connection with this incident. Both deaths will now be referred to the coroner and a file will be prepared for the inquest."
Specialist river police found the 38ft-long Admiral hire craft on the River Bure between Wroxham Broad and Salhouse Broad on Saturday.
A mile-long stretch of the river was closed to the public while the search was carried out.
The bodies were found within yards of where the boat was moored.
It is understood the trio spent a week holidaying in the area and eating in local pubs and were due to return home on Saturday.
Ms Creegan, Mr Didier and the girl were reportedly seen having a barbecue on deck on Friday evening, although other river users said they had seen the boat seemingly abandoned several days earlier.
Several items, including a computer and bed sheets, were removed from one of the cruiser's bedrooms by forensic specialists after it was moved to a boatyard in nearby Horning.