I don't really drink - girl wants to meet for "drinks" what to do? NEED ADVICE!!!!

Go meet her for Drinks. Order a BREW, order some appetizers or what not, Have a beer, eat some food, have a water, cola, or coffe. Repeat Process. So then you probobly end up having 2 BEERS anyways. Even 3 is not out of line. OVER THE APROPRIATE AMOUNT OF TIME. Why, is GEARHEAD GAL a PISSER or something ?