She holds a doctorate in Sociolinguistics - Afrikaans - with the focus on Language and Internet-based Electronic Communication using Corpus Linguistics as a research method. In 2000 she joined the Vaal University of Technology in Vanderbijlpark Gauteng, lecturing English and Communication studies. In 2004 she joined the North-West University – School of Languages - where she lectured Sociolinguistics to undergraduate students. Marieta was subsequently appointed in the School of Educational Sciences in 2008 where she lectured language teaching (Afrikaans) to education students and provided supervision to Honours, Masters and PhD students.