I first noticed this problem when playing with Bastion as my companion. After completing a Dolmen, he sometimes says "It's a rout!". I play with subtitles on and noticed that this dialogue was misspelt as "It's a route!". Since he has an American accent, you'd only notice it in the subtitles, since "route" and "rout" are pronounced in the same way. Mirri, however, has an English accent and I heard her say "It's a route!" (pronounced in British English as "root"), which was also shown in the subtitles, which is plainly wrong.