Police dropped a major drug charge in the Auckland District Court on Friday morning.
Millie Holmes was facing a potential sentence of life imprisonment on a charge of possessing methamphetamine for supply.
The charge has now been reduced to that of possession, which carries a maximum term of three months in prison.
Lawyer Chris Comeskey says police will struggle to prove any drug involvement and he does not know why they started with a major charge.
The case will next be heard in February.