Q: Facetime Isn't Working

Ok, well my girlfriend and I both have iPod touch 4g's.  Both of them are connected to wifi so we can facetime.  The problem is that she can see me and I can see in my corner what my camera is showing her.  However, my screen is totally blank.  I can't see her at all, its totally dark.  I tried a reset.  I don't think its a wifi issue since the call connects, maybe I'm wrong?  Any help is appreciated.