It seems likely they mean that their mother cannot see the signs of coming fascism and danger even though, as a Jewish person who was close to the Holocaust experience, these should be quite obvious. The population under most immediate threat doesn’t have to be Jews for Jewish people to A) still have characteristics of themselves or loved ones that would make them targets and/or B) not want to live under a fascist regime so reminiscent of Hitler’s Germany.
It seems likely they mean that their mother cannot see the signs of coming fascism and danger even though, as a Jewish person who was close to the Holocaust experience, these should be quite obvious. The population under most immediate threat doesn’t have to be Jews for Jewish people to A) still have characteristics of themselves or loved ones that would make them targets and/or B) not want to live under a fascist regime so reminiscent of Hitler’s Germany.