She was accused of seriously compromising the Berlin Transport Authority (BVG) by failing to report for work after going out drinking with female fellow workers.
BVG had received complaints that some of their female employees were taking their colleagues home, encouraging them to consume alcoholic drinks and involving them in lesbian sexual relationships.
[1] In July 1940, as a result of the absence of male workers during World War II, Smula was engaged to work for the Berlin Transport Authority (BVG) as a tram conductor in the Treptow district.
The reason for their detainment was that the BVG had received complaints that women conductors from Treptow had been involved in lesbian intercourse after taking their colleagues back to their apartments and encouraging them to drink.
After her last interrogation on 10 October 1940, Smula remained in the Alexanderplatz prison until 30 November when, together with Rosenberg, she was transferred to the Ravensbrück Concentration Camp.