JUST days before she plunged overboard from a deck of the Carnival Spirit cruise ship, Kristen Schroder spoke of her excitement at spending time with "the most important people in my world".

Ms Schroder, 27, posted a series of comments on Facebook as she prepared to embark on the Pacific Island holiday with her boyfriend and family.

"Gotta pack for the cruise!!! Cannot wait for the down time with the family! It's going to be awesome to have the most important people in my world around me for 10 days!!" Ms Schroder wrote.

Chillingly, the posts were some of Ms Schroder's last words after she and boyfriend Paul Rossington, 30, fell from the ship last Wednesday night.

The pair, from Barraba near Tamworth, are both presumed dead. Police are canvassing the possibility Ms Schroder took her own life and that Mr Rossington leapt over the rail seconds later in an attempt to save her.

The comments on the eve of the trip gave no hint of unhappiness in Ms Schroder's life.

"Underwear, bikinis, daywear all packed! Shoes and formal wear are tough to choose between," she wrote, just a day before the ship departed.

On the morning the ship docked at Circular Quay, ahead of the cruise to New Caledonia, Ms Schroder joked about almost not making it onboard.

"Yep, Miss Organised left the passports in Belmore! Paul to the rescue," Ms Schroder wrote.

Detectives yesterday continued examining surveillance footage from cameras on the ship in an effort to piece together the events leading up to the tragedy.The grainy CCTV footage is believed to show Ms Schroder climbing over the railing of the couple's cabin balcony - and teetering on the edge - before plunging into the water. Mr Rossington jumps seconds later.

Ms Schroder's devastated family have conceded they may never know exactly what happened on the balcony.

Ms Schroder's brother-in-law Sascha Percuoco hit out at suggestions the pair was drinking on the night and denied Ms Schroder deliberately jumped.

"In the end, maybe only Kristen & Paul will truly know what transpired, but hopefully their final moments might be respected rather than tarnished," Mr Percuoco said.

Police said relatives and other passengers from the ship continued to be interviewed and a report would be prepared for the Coroner.