Hello again KG.
When I saw your post first on the NZ forum I wondered if it was a photo of a Kuia. This you now have confirmed. That being the case, such importance was placed upon the photo image, of the living and or dead, that they were very treasured and displayed in their homes, and at the Marae. Even more so than the likes of my Scottish fore bares.
Therefore I would expect the original to still be treasured, and still around, with family or at the Marae, so details about the original should still be possible to get.
To my mind with a date predating the early 1880's the dress could have been obtained one of two ways. Either by purchase, if the family were one of the very successful early trading families, who helped provision the early settlers, [before the local wars] or was a hand me down from one of the settlers or missionaries’, especially if they had been in service to a Colonial Lady.
Being her “Sunday Best” the Kuia will have worn it to all “occasions” and there is a chance you will find other photos, with her included in that dress, which will help with the time lines.
In the case of the location, if it was a public building of that period the wall behind may be of plaster, if however the base board was of Kauri, planks of that width were not around for that long. As Kauri demand out striped supply, and prices climbed, and the dimensions of the timbers supplied changed. Rusticated weather boards started off as wide as ten or more inches, but soon were down to six, and then by 1900 some were as narrow as four.
Just food for thought.
- Alan.