Complex sentence: She temporarily took a job as a nanny and on 15 May 1934, Liselotte's son Walter was born, whose father, a KPD official, had been slain in Gestapo custody.
Split into simpler sentences: She temporarily took a job as a nanny and on 15 May 1934, Liselotte's son Walter was born. The boy's father, a KPD official, had been slain in Gestapo custody.