The BBC's Clinton Rogers reports on the "horrendous" murder

Lynda Bryant, 41, was stabbed to death as she walked her dog at Ruan High Lanes, near Truro on Tuesday.

Lynda Bryant: Nothing to suggest a motive

Her daughter Erin, 19, said: "We're still finding it impossible to understand how anyone would or could do this to her.

"She was and always will be the best mum we could ever have wished for and we'll miss her desperately."

Her sister Lee, 21, said: "She will not be able now to see her grandson Keelan grow up, who she adored so much."

'Please come forward'

She said: "If you know anything or if there is anyone you are concerned about, please think of us and come forward."

Mrs Bryant, a part-time domestic cleaner, suffered stab wounds to the chest, neck and back.

She had been seen talking to a man in his thirties near Ruan methodist chapel shortly before the attack. He is still being sought by the police.

Bid to trigger memories

Next Tuesday police will stage a reconstruction of Mrs Bryant's last walk.

PC Sam Cignaux will be partnered by the Bryants' family pet, a Lurcher called Jay.

Kate Bushell was found dead last November

Devon and Cornwall Police, who have played down links with the murder of 14-year-old Kate Bushell near Exeter in November 1997, have received more than 1,000 calls from the public.

A criminal psychologist has been called in to help a team of 120 officers who are hunting for the killer.