[2] Bahr was born in Nördlingen, but grew up in Wemding and attended the local primary school, where her father worked as a teacher, from 1970 to 1974.

She then studied English, history, German and music at the University of Augsburg to become a secondary school teacher.

In 2013, Bahr ran for the Bundestag in the constituency of Augsburg-Stadt and was elected via the list of her party.

In parliament, she has since been a member of the Committee on Families, Senior Citizens, Women and Youth, where she is her parliamentary group's rapporteur on children, adolescents, and prostitution.

Since the 2021 elections, Bahr has been chairing the Committee on Families, Senior Citizens, Women and Youth.