A taxi driver says a couple he drove to a Port Fairy caravan park seemed happy in the hours before a fatal stabbing in September 2019.
The driver gave evidence to a jury in the Warrnambool Supreme Court trial against Jessica Wilson, 36, who has pleaded not guilty to the alleged murder of Marcus Adams at Port Fairy's Catalina Caravan Park in the early hours of September 20, 2019.
On Friday, the court heard that on the day before the fatal incident, the taxi driver received a fare to collect a passenger from Geelong's Epworth Hospital just after 3pm.
It is not disputed that it was Ms Wilson and her partner Mr Adams that were picked up by the taxi.
The driver said the couple appeared "very happy" with each other and that the man was looking after the woman, who was having issues with her back.
The jury heard on Thursday that Ms Wilson was involved in a serious vehicle collision on August 24 that year - about four weeks before the fatal stabbing - and remained in hospital for some time.
The taxi driver said he helped the woman into his vehicle and that there were no arguments between her and the man in the more than two-hour ride from the hospital to the caravan park in Port Fairy.
A Catalina Caravan Park resident told the court that he observed the couple arrive at the caravan park in the taxi in the early afternoon of September 19, 2019.
He said he later went to bed but was awoken in the middle of the night by people arguing and "scuffling" around in a nearby caravan.
He said he heard the woman say "get off me" about four times before yelling "help me! help me!".
Another male resident of the park said he was awoken by "quite loud" banging noises and a loud female, who he heard say: "Get f*** Marcus, you drug f***** dog".
The prosecution alleges a spontaneous verbal argument between the couple led to the fatal incident.
Warrnambool paramedic Timothy Tabart told the court that he was called to reports of a stabbing at the caravan park about 2.30am.
He said the victim was not actively bleeding but had suffered a wound to the left of his spine.
Paramedics attempted to resuscitate the man but he died at the scene.
Lawyers for Ms Wilson said she acted in self-defence but the prosecution alleged she either intended to seriously injure or kill, or "unnecessarily" defended herself.
The trial continues on Monday.
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