Founder of The Coffey Firm, she practices in Dallas, Tarrant, and Collin counties. She is board-certified in DWI by the National College of DUI Defense (NCDD) and is a Regent of the NCDD. Author of Texas DWI Defense: The Law and Practice, Mimi has also written three nationally published and four statewide articles. Mimi has twice attended Indiana University’s Borkenstein Course for state toxicologists, on both alcohol and drugs. She has also completed the NHTSA SFST Course, SFST Instructor Course, and the 12-Step DRE Mini-Course Program. She is also one of the first attorneys in the United States to attend the Axion Labs Gas Chromatography Training. Her minor in college was geology, lending her a comprehensive and disciplined scientific mind when it comes to scientific and mathematical issues such as blood and breath testing.