Donna McGready was stopped in her Ford Focus on Worksop Road, Budby, on November 13.
A test revealed she had 92 mcgs of alcohol in 100 mls of breath.
McGready, 34, of Larch Road, New Ollerton, pleaded guilty to drunk driving when she appeared at Nottingham Magistrates Court, on December 15.
She was fined £518 and ordered to pay a £52 victim surcharge. She was banned for 23 months.