Refill of coffee in a cappuccino???

Ok, so this may be a bad way to introduce myself to this forum as a neurotic NYer....anyway, I had dinner with my folks in a very nice restaurant in Milford PA, the third or fourth time I have dined at this establishment and my parents are on a first name basis with the wonderful chef/owner. Along with my parents and brother we ordered several drinks (only my father and I drank hard drinks, martinis) salads and entrees (striped bass with a seafood stuffing and tomato coulis for me, fantastic), while we were already stuffed it was a sat night, my dad and I each ordered cappuccinos and the four of us shared two desserts. The cappuccinos came out several minutes before the desserts and at some point I asked if I could have a refill of plain coffee. At the end of the meal we had a check well in excess of $100. What struck me as odd was that the waitress charged me $2 on top of the $4.50 for the cappuccino for the coffee refill. I know from past experience that if I had ordered a $2 coffee in the first place the refill would have been gratis. I have no qualms with the $9 martini (they are huge) or the $4.50 cappuccino, they are indulgences which I accept at a place like that. Maybe I am expecting something for nothing, I just felt it waa a little chincy for the waitress to charge another $2 and call it restaurant poilicy on a tab that high. I have no doubt that the chef/owner would have taken it off if questioned and that staff is often times unable to make mgmt. type decisions that are seemigly insignificant. Nevertheless it has been on my mind. Any opinions?