A rare example of word usage proving that proper English is still being taught in some quarters.
Actually, proper English would have it as "...with whom I would soon have lunch." She wasn't having lunch at the time, she was waiting for a companion with whom she would share a midday repast at a futre, but proximate time.
But that's just nit-picking. I'll read anything Cathryn has to say.
Michael
Or "with whom I was to have lunch.", etc. I was just impressed with the use of "whom". It's a lost word, like "shall" and "shan't".