Most girls who are serious about getting fit, do though.
I mean the kind of serious where you're like 'screw this, i'm going to do my research, get some help, and get working properly'
I've personally always found it beneficial to get some kind of guidance from a PT, even if its just once in a while, get yourself some actual reachable goals, and not to be scared off by the 'scary guys in the weight section'. Most people in the gym WILL help you when you ask and also, after a while you start to feel really pumped about going/happy when you can handle more and more weight.
I think its just a case of having the right mentality about the whole thing and being determined enough. If you want it enough, you will go out there and get it. Lifting produces results.