The 25-year-old Tacoma woman, Pamela N. Williams, also was ordered to pay $7,000 in restitution, and she was banned from the park for the three years of supervision after she is released from prison.
The U.S. attorney's office said Williams pleaded guilty in December to conspiracy and aggravated identity theft.
A co-defendant accused of participating in the car break-ins in the summer of 2010, Matthew Mortinson, is scheduled for trial in June.
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