Worried about chicken after dog scare

A couple of hours ago, my mums 3 dogs chased my 2 girls whilst they were in their coop. As soon as they dogs were away I let the girls out and all seemed fine at first. I then saw that one of their combs was slightly off colour, I checked her over and her beak was chipped & bleeding by the base and she had also cut her comb. I have bathed with hibiscrub, she seems perfectly fine, eating & drinking no problem.
After about an hour my other girl took herself off to the nest box, she is not making any noise and she's not laying as she only laid about half hour before the incident. I've never seen her in the nest box during the day, she's been in there about an hour now. She seemed perfectly fine after the incident, free ranging in the garden, eating & drinking.
Is it shock? Should I leave her alone? Should I get her up? Or am I just a worrier?

Thanks Mulberry1990, I gave her a little piece of toast, she ate it and then started squarking REALLY loudly. She came out to the garden, still squarking away, I've checked the nest box and there is a soft egg in there, poor thing. She is still making a right racket, will keep a close eye on her.