"I was just slipping and slipping. I told her to let me go because I didn't want her to go over with me.
"It must have been a horrifying dilemma for her."
The duo looked up ahead and saw the ground coming up to meet them at the 400m mark, and it was then that they both decided it would be the best time to let go.
Mrs Adams fell about 5m to the ground and was left with six cracked ribs, a broken pelvis, a damaged liver, a punctured lung, and a badly broken arm.
She is now in Dunedin Hospital's intensive care unit after being flown from the skifield by rescue helicopter.
The family member was beside herself when recounting the incident yesterday.
"She was just dangling as we went up. I held on to her for six pylons — about 400m — but I couldn't hold on to her any longer.
"It was pretty terrifying. But it was also the most opportune time.
"I think if she had dropped before or after that point, she would have been higher off the ground, and she would have died — I'm 100 per cent sure of that."
Mrs Adams's husband, Mike Adams, has criticised the chairlift operators at Cardrona.
He said they could have stopped the lift sooner.
"It is the scariest thing. It needs to be publicised.
"This was completely avoidable, had they been doing their job properly."
He had made an official complaint to WorkSafe.
He said the attention his wife received from the mountain doctors and other doctors who came to her aid, was very good.
Mrs Adams had six hours of surgery on her arm yesterday, and was waiting for a transfer to Middlemore Hospital for more surgery.
"She will be out of commission for quite a while," Mr Adams said.
Cardrona and Treble Cone Experiences general manager Laura Hedley said WorkSafe was notified immediately following the incident, and witnesses were interviewed as part of an ongoing internal review.
"As per our policies, staff involved were drug and alcohol-tested directly following the incident and returned clear results.
"Sound testing was also conducted to verify witness statements.
"We will work closely with WorkSafe and are supporting our staff as the investigation continues."
She said the company had been in contact with the Adams family, and would continue to support them.
"This has been, and will continue to be, a difficult time for all involved, and our thoughts are with Mrs Adams and her family."