5-12: a lo que me contó: in view of what ... told me.
5-13: se va al infierno: translate disappears. (Infierno = infernal regions.)
6-1: ello es: the fact is.
6-2: llevarían: would live. Cf. lleva diez años de casado, he has been married ten years.
6-3: de servicio: on service, on duty.