Mihalic grew up as the youngest of three siblings. Her parents are from Croatia; they came to Germany in the 1960s. Mihalic trained as a police officer and studied at the Fachhochschule für öffentliche Verwaltung Nordrhein-Westfalen, graduating as a Diplom-Verwaltungswirt. She studied criminology and police science at the Ruhr University Bochum, graduating with an M.A. degree in 2016. In 2018, she received her doctorate from the Law Faculty of the Ruhr-University Bochum. Her dissertation was published under the title Police Operations, Crime and Space - A Criminal Geographical Analysis Based on Police Operations Data and Social Structure Data of the City of Gelsenkirchen.
Early career
From 1993 Mihalic worked as a police officer, from 2007 she worked for the Cologne Police Headquarters. At the end of the 2000s, she acted, together with her colleague Dennis Melerski, in the German reality TV series Achtung Kontrolle! – Einsatz für die Ordnungshüter.
Political career
Career in local politics
Mihalic has been a member of Alliance 90/The Greens since 2006. She was a member of Gelsenkirchen City Council from 2009 until the end of 2013. Since 2010, she has been a member of the board of Bündnis 90/Die Grünen Nordrhein-Westfalen.
Member of the German Parliament, 2013–present
In the 2013 federal elections, Mihalic ran in the Gelsenkirchen constituency and in 7th place on the North Rhine-Westphalia state list of Alliance 90/The Greens. She succeeded in entering the Bundestag via the state list. In the 2017 Bundestag elections, Mihalic again entered the Bundestag, this time in 5th place on the NRW Alliance 90/The Greens state list. Mihalic has been a member of the Committee on Internal Affairs since 2013 and her parliamentary group’s spokeswoman for internal affairs since 2016. Initially, she acted as spokeswoman for internal security in the Alliance 90/The Greens parliamentary group and, until 2017, as chairwoman of the Committee on Internal Affairs. She is also part of the Committee for the Scrutiny of Acoustic Surveillance of the Private Home. Since 2018, Mihalic has been chairing the investigative committee on the attack at Breitscheidplatz in Berlin. Previously, she was chairwoman of the NSU investigative committee of the Bundestag and chairwoman of the investigative committee on the Edathy affair. Mihalic is also an alternate member of the Committee on Legal Affairs and Consumer Protection. In addition to her committee assignments, she has been serving as deputy chairwoman of the Parliamentary Friendship Group for Relations with the Northern Adriatic States.