This was a really tough choice, because I could see quite a few classes, but ultimately I'd like to say Thief! I think you're like some of the friendlier thieves in the FF series - Locke and Zidane come to mind. They're quick thinkers and really good at adapting (which I'm guessing you are, since you said you were the go-to girl). There's also that streak of impulsiveness in you that made me think 'thief'. I kept seeing a lot of White Mage too, though.