Ms. Gray also received a master's degree from WMU. She earned a law degree from Hastings College of Law and practiced both corporate and private law for the next fourteen years.
She was an attorney for Atlantic Richfield and Montana Power companies. In 1991, she was appointed by the governor to the Supreme Court of Montana.
The following year, she was elected to a seat on the court and served as a member of the Gender Fairness Task Force.