Perfectly explained!
By the way, what she says about changing last names is true.
My grandfather from my dad's side's name was Reichler. My father changed our last name to Raveh.
From my mom's side, the last name was Schreiber, which means writer in German. My mom's brother changed his last name to Sofer, which is Hebrew for writer.
Both their European names were "acquired" generations back when their Shtetls (Jewish village) were forced to do so.