No. It looks like a beat down.Could she have been attacked by a predator?
Not remotely.Or is she beginning to cluck = getting broody?
This is the hen that was being terrorized by the little d'Uccle cockerel before I sent him packing. He'd chase her down and force her to submit when he could catch her. If Fabio was close by, she bee-line to him and submit to him. He'd mount her, get off and she'd just stay frozen in the submission position for up to a minute while he would peck her to try to get her up.
I've seen Napoleon chase her on occasion too.
She's the Exchequer Leghorn.