Lettie’s research involves multidisciplinary teamwork and psychological safety in health and social care. Her PhD at the University of Chester in 2022, “An ethnographic investigation into multidisciplinary team collaboration - the role of psychological safety in a high-secure forensic in-patient hospital in Germany”, contributes to the knowledge about multidisciplinary team (MDT)collaboration and psychological safety in forensic mental health care. The study explored and identified the factors that contribute towards or create barriers to the effective functioning of the MDT in forensic hospitals, to empower staff members, leaders, and healthcare institutions.

She is a member of the European Cost action FOSTREN. In this working group more then 200 innovative researchers from 33 countries work together to Foster and Strengthen Approaches to Reducing Coercion in European Mental Health Services www.fostren.eu

She is also a member of the European Violence in Psychiatry Research Group (EViPRG) and the German BFLK forensic Network - A Network for all Nursing Directors of forensic mental healthcare in Germany.