Do you think she is broody or just wierd lol
Best way to find out would be to give her some eggs. Set an egg down in front of her; does she roll it under her or ignore it? If she rolls it under her, she's broody. If she flat ignores it, she's just weird. If you suspect she is borderline then giving her a few fakes to sit on may push her over the edge.
I am not the most experienced around but that should give you a decent clue to her hormone setting right now.