Emily Sanson-Rejouis and her bandaged two-year-old daughter, Alyahna, flew to Florida from the Dominican Republic yesterday afternoon.
Mrs Sanson-Rejouis' husband, Emmanuel Rejouis, and their two eldest daughters, Kofie-Jade, five, and Zenzie, three, were killed in the Haiti earthquake on Tuesday, Mr Rejouis' sister, Anne-Louise, said they had arrived safely in Miami.
"They're fine, they're safe," she said. "We were all very happy to see them.
"I'd like to say that we're all thankful for everybody's wishes and prayers for us," the Herald on Sunday reported.
Alyahna had a broken leg and a few scratches but was "doing fine".
Alyahna was rescued by her mother from the rubble of the Hotel Karibe in Port-au-Prince, where the family was staying.
The bodies of Mr Rejouis and Zenzie have been recovered, but Kofie-Jade has still not been found.
Mrs Sanson-Rejouis' parents, Jennie Wilson and Roger Sanson, and sister, Rachel Sanson, have flown to Miami to be with them.
Ms Sanson told TV3 from the airport that the family's hard times were just beginning.
"We are incredibly grateful that Alyhana has survived. It gives Emily something to focus on," she said.
Mr Rejouis, who worked for the United Nations, had moved his job from Burundi in East Africa to his homeland of Haiti so he could provide his Kiwi family with a safer life, according to Jules Hobbs, a friend of the family.
She said Mrs Sanson-Rejouis was bringing their three children up alone in Nelson last year before her husband found them a "safer" way to be together, the Sunday News reported.
"Burundi is not a place to bring up children and his desire was always to find a position which would allow him to keep the family together. [Haiti was also an opportunity for] the children to experience the country he was brought up in and speak French as well," she said.
Mrs Hobbs' six-year-old daughter, Sofie, was best friends with Kofie-Jade and said Mr Rejouis was inspiring, interesting and passionate, with a desire to do good, the newspaper said.
Mrs Hobbs has set up a Facebook page to support the family.
An ebay auction organised by artist Sarah Larnach, who is the step-sister of Ms Sanson-Rejouis, and singer Ladyhawke to raise funds for Save the Children's Haiti emergency appeal has gone over $NZ1100, with a day to go.
Larnach and Ladyhawke work together and the auction features a painting by the former and a jointly signed copy of what is said to be the hard-to-find first release of the Ladyhawke single Paris is Burning.
"I'm really pleased to be able to give the funds raised in this auction to Save the Children, in the knowledge that they are actively involved in Haitian relief efforts," Larnach said in a statement.
"Save the Children have assured me that the money will be used directly to aid children and their families in Haiti."
Auckland teacher Samuel Picketts, 59, who was on holiday in the Caribbean, has contacted his family to say he is not in Haiti and is safe.
