I might be blind but there's no way I could tell you anything based on those photos... Look from the 4th node up. Male preflowers look like a stick with a ball underneath, female should be pretty obvious to ya (look for the stigma/pistils coming out of a teardrop shaped growth)
You're not blind. I could not tell from those pics either. OP, just give it some more time. all will be revealed.
Nope, she's not showing yet, check out my sticky http://forum.grasscity.com/absolute-beginners/873879-how-tell-whether-your-plants-male-female.html I have some good pre flowering pics.
To early to tell dude...when they show sex there 100% showable. Its impossible not to be able to tell.