Younger hens are more prone to hormonal swings too. I would stay out of her way. She may mellow out after a few months, but will probably go full on broody at some point in her life. She's not being mean, just feeling maternal, and probably confused.
She still sounds semi-broody. I've had them walking and talking like a broody but they continue to lay and go about their business. It could be that she's also in the beginning of going broody. Is she younger?