Yes, she is most likely not a rooster. Her looks are quite similar to the other pullets and I haven't heard any rooster-like sounds from her. She is 3 months old and looks just like a regular pullet.
Here is the most recent picture of her
Thanks for the update. She looks pullet-y to me! Im a newbie, but Im pretty sure I remember barred rocks get combs/wattles earlier than some other breeds, so I imagine it would be the same for white ones. If she turns out to be a he I will be VERY surprised.
We have twelve two-month-old chicks (3 Rhode Island Reds, 3 Black Harcos-or maybe Black Sex-links, we don`t know for sure-3 Columbian Rocks, and 3 Plymouth Barred Rocks) and one of the PBR`s looks like a rooster...the comb is much longer than everybody else`s. Just wondering if anybody could help a little. (She is the one on the far left that is the biggest and brightest)...thanks