New York held primaries for Congress on June 28. Write-ins in New York primaries are not permitted unless someone files a petition asking that primary write-ins be counted. Once that petition is accepted, all write-ins are valid, whether the write-in candidate wanted write-ins counted or not.
In the 12th district, in the Reform Party, Ivanka Trump, daughter of Donald Trump, won the Reform nomination with 2 write-ins. There were also three individuals who received one write-in each. Here is the New York City Board of Elections certification for that primary.
Ivanka Trump is free to decline the nomination. Here is a news story about that primary. Thanks to Frank Morano for the link and to Independent Political Report for the link to the certification.