She was in the third week of an 18-month probation period after stealing 425 temazepan tablets from a pharmacy.
Tests showed she had alcohol, valium, Oxazapam, Temazepam, cannabis, codeine and doxylamine in her system and the sentencing judge described her as a pharmacological nightmare.
An Immigration Australia decision released last week said Clark was extraordinarily reckless.
The 22-year resident of Australia will have her visa cancelled and she will be deported to New Zealand when she is released from prison.
Clark, who is married to an Australian, said she was a very different person now and had accepted responsibility for her actions.
She had paid the price by completing her sentence and was no longer a threat to the community.
However, Immigration said there was a risk she would relapse into drug-taking and driving, putting the Australian community at risk.
Her husband's support was not enough to stop the 2008 incident and would not be sufficient now.
Clark's immediate family live in Australia, but have not indicated they would support her.
Her husband has said he would move to New Zealand.
She has a previous conviction for breaking into a pharmacy and stealing drugs in 2007.