Baltimore Mayor Catherine Pugh is refusing to resign over a scandal surrounding children’s books she authored despite a unanimous call from the city council for her to step down.

“The entire membership of the Baltimore City Council believes that it is not in the best interest of the City of Baltimore for you to continue to serve as Mayor,” the 14 council members wrote to Pugh on Monday. “We urge you to tender your resignation, effective immediately.”

Pugh’s troubles began last month when the Baltimore Sun reported that, while serving on the University of Maryland Medical System (UMMS) board of directors, Pugh arranged deals beginning in 2001 to sell 100,000 copies of her “Healthy Holly” series to the medical system at a total cost of $500,000. While the books teach children the importance of diet and exercise, there were no competitive bids for the deal, and Pugh resigned from the board last month.

Just before Pugh announced her leave of absence, the Sun reported that the health insurance giant Kaiser Permanente paid Pugh $114,000 for copies of her books from 2015 to 2018. In September 2017, the city’s spending board, which Pugh controls, awarded Kaiser a $48 million contract for insurance for city employees. Pugh has not commented about the deal with Kaiser.

Additional Baltimore groups and individuals have stepped forward since Pugh has gone on leave to say they purchased books from her, bringing the total money she received for the series to nearly $800,000. At least 20,000 copies of the “Healthy Holly” series remain unaccounted for, and another 8,700 sit unread in a warehouse.