"In light of that new information, INZ has offered a limited visa which means, once Ms Safamanesh accepts our offer, she can visit New Zealand for the express purpose to attend her sister's wedding as a bridesmaid."
An overjoyed Bahare said of the offer: "Immigration changed their mind and granted a visa to my sister ... I'm dancing."
She also posted on the "Immigration NZ's unfair decision" Facebook group saying she believed people could change immigration decisions.
"I am pleased to say that we won and they accepted their mistake," Bahare said.
"Although they gave her a limited visa, [it's] almost the same conditions as a visitor visa ... keep defending your rights people."
Limited visas can be granted to people who would not be accepted for other visa types because of a risk that they might overstay or for those who choose it as their preferred method of entry.
Reasons for the grant of limited purpose visas include medical treatments, family emergency, short course studies or special event such as wedding, funeral, reunion or sporting event.
Bahare, who runs an architecture business, was born and raised in Iran and moved to NZ first as an international student in 2011.
She is planning to marry her Kiwi-born fiance Matthew Cross on February 9 next year.