The Otago University rower claimed bronze in the first ever mixed eight world championship event, held at the regatta in Shanghai overnight.
It went with the bronze medal she won in the women's four on Friday.
Lequeux, who also went to Otago Girls' High School, was joined in the New Zealand eight team by Alana Sherman, Oliver Welch, Ben Taylor, Campbell Crouch, Flynn Eliadis-Watson, Beckie Leigh, Isla Blake and cox Harry Molloy.
They only had two training runs in the lead-up to last night's final, but managed to finish third behind gold medallists Romania, with Italy second.
The New Zealanders timed in at 5min 41.06sec, behind Romania (5min 34.46sec) and Italy (5min 39.58sec).
On Friday she joined Blake, Leigh and Sherman to win reach the podium in the four, while Taylor and Welch claimed gold in the men's pair on Thursday.
The New Zealanders got away quickly in the eight final, settling third behind Romania and Italy and the order stayed that way for the rest of the race, but with the Romanians stretching their lead at every 500m mark.
"We had a bit of a shocker in the heat," Molloy said.
"But we regrouped, changed the plan for the final, and focused on just swinging on it. We went off like a rocket, like I didn't expect to be that far up the field at 500. It made my life pretty easy."
The introduction of the mixed eight has been warmly welcomed by the rowers and the sport's governing body is pushing to have it included in the 2032 Olympics in Brisbane.
"I'm a pretty big advocate because it's a seat for a coxswain," said Molloy.
"Like you see in athletics, that's the way forward for them in terms of getting viewership up, increasing revenue and costs down.
"I think it's cool also bringing both genders together and doing something as one nation."
Waikato's Logan Ullrich finished third in the men's single sculls B final, taking his world ranking to nine in the event.
Ben Mason, who went to Otago Boys' High School, and Kathryn Glen were second in the B Final of the mixed double sculls.
- Allied Media/RNZ
