"[They had] poor communications skills [and] no understanding of what teamwork means. A team is only as good as its weakest player. It was every woman for herself."
The former policewoman from California said the all-male tribe Monolo were doing everything right.
"Men are willing to let each other prove themselves. Women tend to judge one another by first impressions. [It's] not a good strategy for Survivor."
Edorsson was only being kept around to make up the numbers in an alliance, Acosta claimed.
"She was a distraction and a liability. They kept her because she gave them the numbers, and she was never going to be a threat down the road.
"I think I went against the alliance of five, and wanting Kat to go home. But Kat was becoming a liability to the tribe, and I thought it was time for her to go.
"If I had had a little more time, I think I could have influenced Kim and Chelsea to see things my way."
Watch highlights from Nina's time on the show:
* Survivor: One World screens on Four on Sunday nights. nzherald.co.nz will interview every contestant after their elimination.