Fleiss tells the Las Vegas Review-Journal she has "a bit of a substance abuse problem" and says she intends to seek private treatment.
Prosecutors say it took almost five months to process Fleiss' blood test results after her arrest on a driving under the influence charge that the DA decided not to pursue.
Fleiss operates a coin-operated laundry, called Dirty Laundry, in Pahrump, 60 miles west of Las Vegas.
She moved to Nevada in 2005, after having been jailed in California for running a prostitution ring.
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