Bron, do some searches on this forum. A lot of us with small hands like Campy. Shimano does not make a women's specific version; they make a short reach version that both sexes with small hands use. Shimano uses a shim to bring the lever closer to the bar.
Go to your LBS and ask to test ride bikes with both levers. It is really a personal preference. The shifting as well as the gearing choices are vastly different in both brands so consider that in your decision, though if you decide you prefer Campy levers but want lower gearing there are solutions.