I am also a female weight lifter, and trust me, you really won't get 'bulky' unless you're down to less than 15% body fat (hard for a girl! Most of us are around 20-25)
Judging your own body fat..
I haven't been lifting long (less than a year), but I'm up to 80lbs bench and 175lbs deadlifts, so I feel like I'm on my way to 'strong'. I'm still curvy and feminine, though!