Chamica Adams, 24, was given the sentence by D.C. Superior Court Judge Gerald I. Fisher. She pleaded guilty to involuntary manslaughter in March.
Adams was arrested Sept. 8 after the 2007 Dodge Charger she was driving struck two women.
Julia Bachleitner, 26, a graduate student at Johns Hopkins University, died of her injuries six days later.
Authorities said Adams had a blood-alcohol level nearly twice the legal limit for driving in the District.