@Brandon ***********
yes she has a NZ passport so will enter visa exempt.
So under this scenario we travel to Thailand together, myself on a Non-O Retirement and my wife on visa exempt. My wife then travels to Vietnam to apply for the DTV whilst I stay in Thailand to complete my 1 year extension. If my wife is denied the DTV, she may not be able to enter Thailand as it could appear like a visa run because she was just in Thailand on visa exempt when we both travelled there together.
It’s not ideal for me to travel to Thailand whilst my wife travels separately to Vietnam to apply for the DTV.
Or sorry am I missing your point?