As she was without papers and refused to identify herself, she was admitted as Fräulein Unbekannt ("Miss Unknown") to a mental hospital in Dalldorf (now Wittenau, in Reinickendorf), where she remained for the next two years.
Cum nu avea acte și a refuzat să se identifice, a fost internată sub numele de Fräulein Unbekannt (Dra Necunoscută) la un azil de boli mintale din Dalldorf (acum Wittenau, în Reinickendorf), unde a rămas timp de 2 ani.