Marei has been a student assistant at the IfR since February 2021. She is currently in charge of the institute's website and the website of the Contested Territories network. She also supports the team of the research teaching project "Gemeinsam Stadt_Machen. An interactive CitizenLab with Karlsruhe's Südstadt."

From September 2017 to August 2020, Marei studied International Relations at Karlshochschule International University. Since October 2020, she has been studying the Master Regional Science/ Spatial Planning.

Through various stays in Peru and Argentina (e.g. weltwärts voluntary service in Peru August 2016-17; semester abroad in Argentina SS 2019; field research Argentina autumn 2022) she developed a research interest in Latin America.