"It was a really rapidly developing scene and pretty harrowing for the victims that had to jump into the water," she added.
For resident Kekoa Lansford, the horror was far from over.
"We still get dead bodies in the water floating and on the seawall," Lansford told CBS.
"We have been pulling people out ... We're trying to save people's lives, and I feel like we are not getting the help we need."
Aerial photographs of Lahaina, which served as the Hawaiian kingdom's capital in the early 19th century, showed entire blocks reduced to cinders.
Green said around 1,700 buildings were now believed to have been affected by the blaze.
"With lives lost and properties decimated, we are grieving with each other during this inconsolable time," Maui Mayor Richard Bissen said.
"In the days ahead, we will be stronger as a... community," he added, "as we rebuild with resilience and aloha."
EVACUATIONS
Thousands of people have already been evacuated from Maui, with 1,400 people waiting at the main airport in Kahului overnight, hoping to get out.
Maui County has asked visitors to leave "as soon as possible", and has organised buses to move evacuees from shelters to the airport.
The island hosts around a third of all the visitors who holiday in the state, and their dollars are vital for the local economy.
Fires have also broken out on Hawaii's Big Island, but officials said they were under control on Thursday.
The state's tourism chief Jimmy Tokioka acknowledged the tragedy but reiterated that the "rest of Hawaii is open."
With a hurricane passing to the south of Hawaii, high winds fueled flames that consumed dry vegetation.
Thomas Smith, a professor with the London School of Economics, said that while wildfires are not uncommon in Hawaii, the blazes this year "are burning a greater area than usual, and the fire behaviour is extreme, with fast spread rates and large flames".
The Hawaii fires follow other extreme weather events this summer in North America, with record-breaking wildfires still burning across Canada and a major heat wave baking the US southwest.
Europe and parts of Asia have also endured soaring temperatures, with major fires and floods wreaking havoc.
As global temperatures rise over time, heat waves are projected to become more frequent, with increased dryness due to changing rainfall patterns creating ideal conditions for bush or forest fires.