She definitely looks like a pullet, but I am wondering if the behavior is more rooish.
We have 1 Black Australorp that we are pretty sure is a rooster, but he's a pansy. Not dominant at all!
Is this normal?
From my experience, the more friendly and outgoing young birds almost always turn out to be cockerels - but it could well be that your little one is a girl and is a tough cookie If you post pics on the "what breed or gender is this?" forum when they are 6 weeks old, you should know who is what.