Hi there, not sure if you made contact with any glass artists in NZ or whether in fact, you have been to NZ and back in the US.
In Auckland, there are many artists studios, blown and cast, which include Ron Reichs, Ann Robinson, Christine Cathie, Evelyn Dunstan and there is an NZSAG site as well, www.nzsag.co.nz
on web or facebook.
Whanganui also have internationally renowned artists like Claudia Borella, Carmen Simmonds, Raewyn Roberts, Emma Camden, David Murray, etc etc. however, visits to artists studio are normally made by appointment and for contact information, to to www.nzsag.co.nz
Good luck but if you have been and gone, I hope you got to meet a lot of people in the glass world in New Zealand.