That is what I thought. But I am not sure she is broody or if it is the heat. There is no threatening behaviour from her, I would go so far to say there isn't an aggressive bone in her body. She just gives me 'the glare' and want to be in the nest box. She didn't even pull the eggs under her when I put some there to see what she would do, possibly because I was there (I did remove them after a couple of minutes and she hadn't moved them). She does make some really sweet soft noises though.
I have never had a hen behave like that. My bantam, when she went broody you knew it. She is doing well with her chicks though and lets me pick them up!