In 2003, a year after joining the PVEM, Ávila joined the legislature after being elected to the Chamber of Deputies of the LIX Legislature. She sat on six commissions, including Special for Kids, Teens and Families; Care for Vulnerable Groups; and Population, Borders and Migratory Matters. In 2005, during her first term as a federal deputy, she became the president of the PVEM in Chihuahua, an office she would hold for six years.
