A very sad case.
I hate to speculate but are you aware that Peter Tobin was in the area between mid 2004 to late 2006?
Wikipedia article attached:
http://en.wikipedia.org/wiki/Peter_Tobin a very violent and sadistic killer.
I notice that she apparently drowned in Fresh water but was found in the sea. There is a lake on the golf course immediately to the south of where she was found.
quote from Wiki:
Rape of juveniles On 4 August 1993, Tobin attacked two 14-year old girls at his flat in Leigh Park, Havant, after they called to visit a neighbour, who was not in.[9] They called at Tobin's flat and asked if they could wait there. After holding them at knifepoint and forcing them to drink strong cider and vodka, Tobin sexually assaulted and raped them and stabbed one of them whilst his younger son was present.[5] He then turned on the gas taps and left them for dead but they both survived the attack. To avoid arrest, Tobin went on the run and hid with the Jesus Fellowship, a religious sect, in Coventry, under a false name. He was later captured in Brighton, after his blue Austin Metro car was found there.[10]
On 18 May 1994, at Winchester Crown Court, Tobin entered a plea of guilty and received a 14-year prison sentence. In 2004, the 58-year-old Tobin was released from prison and moved back to Paisley.
Angelika Kluk murder in September 2006, Tobin was working as a church handyman at St. Patrick's Roman Catholic Church in Anderston, Glasgow. He had assumed the name "Pat McLaughlin" to avoid detection, as he was still on the Violent and Sex Offender Register following his 1994 convictions for rape and assault. An arrest warrant had been issued for him in November 2005 after he moved from Paisley without notifying the police, but he was not discovered until he became a suspect in a murder case at the church. In May 2007, he received a further 30-month sentence for breaching the terms of the register.