If it were my own personal opinion, if your hands are really small, I have plenty of suggestions. There are many great mice to choose from.
It's your personal preference. Try going to a Best Buy or something and testing the mice they have.
But here are some of my personal opinions.
Logitech G303 Daedalus Apex Or Logitech G Pro
Steelseries Rival 100
Mionix Castor
Corsair M65 PRO
But then again, I'm probably not the one you should listen to. If you want in-depth analysis, go to the Youtube Channel RocketJumpNinja. (Or his website, www.rocketjumpninja.com).
But by now, I'm sure you've already bought a mouse. Whatever, I don't have anything else to do lol