"What happened sucked. It really just sucked," Ostilly said. "That aside, I loved being here and hope to come back some day. But right now I'm just looking forward to going home to New York and spending some quiet time with friends and family."
Before changing her Facebook page, Ostilly posted last Sunday that in the wake of the nights out with Styles she suddenly had 75 new friend requests and "4 inboxes calling me a bitch".
In a bid to take some heat off Ostilly, Styles, also 18, took to Twitter last week to deny they were an item. But not before he gave a snap of the 1.75m model in a bikini the thumbs-up on her Facebook page. The pair first met on the set of a video for the One Direction hit Gotta Be You.
A few days ago, Ostilly insisted on her new Facebook page that the pair had not been dating, even though One Direction's Zayn Malik had also messaged her asking: "Hows Harry?".
But when quizzed about her relationship with Styles, her lips remained sealed.
"Look, I've been told not to talk about that," she said. "I'm not allowed to say anything."
Although she considers herself "a baby" in the catwalk business, Ostilly, whose parents were also models, has already worked with major brands such as Abercrombie, American Eagle and Victoria's Secret.
She is signed to top international agency Wilhelmina Models, which represents celebrities including Fergie and Beyonce. She can command up to $15,000 per fashion shoot.
Friends and colleagues Ostilly worked with in New Zealand were shocked at the treatment dished out to her by some One Direction fans.
"Emma is a really down-to- earth person," said fashion lensman Damien Nikora. "The abuse directed at her was pretty disappointing."
Photographer Guy Coombes, who oversaw magazine sessions for Ostilly in Auckland, said: "Emma is a fantastic model."
Marama Nicholas, boss of Ostilly's New Zealand agency Clyne Model Management, added: "Emma is a very nice young woman as well as being a talented model. We hope to have her back some day."
