Most of Magda’s children were daughters.
And we all know what Soviet troops did to young girls and women as they advanced into Germany.
Joseph Goebbels probably would have been hanged at Nuremberg had he survived the war. Magda and the girls would have probably been raped and imprisoned.
The only question is I have the feeling the Soviet higher-ups probably issued directives to leave the kin of the highest Nazi officials alone. They had to be concerned with their post-war image after all. Now for the ordinary German woman, they certainly would turn a blind eye.