Although it seems the final decision has been made, I'll vote girl too. My girls started getting slightly more pronounced combs (more than what they had before, like they hit a little growth spurt) about this age and it had me concerned but they are now 7 weeks old and are very obviously Hens. So I, too, believe you have an adorable little girl there.
I love the Barred Rocks, so far they are my favorite
I love the Barred Rocks, so far they are my favorite