If you can't shift it at all (even at a stop, just to see if the lever will even move) you might need to take it back and have the shop readjust it.
Otherwise, maybe the STI are just too big for your hands. Several women on TE have said they use Campy because the levers are easier to use with smaller hands. A couple folks are using shims for the braking, but I don't know if that would help with the shifting.
I'm planning to put friction levers on my downtube when I do my Soma build. Just call me "curmudgeon."
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson