Hi, and welcome to BYC!

Sorry your hen is having a rough time.
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I think yes, she could still be intimidated and scared of him, and in a little time away she'll forget this. It is a hen's life to be bred by roosters, but not mauled. I'd question putting him with your hens yet because now that she's out, he's going to attack another one. Maybe he should have separate quarters for a few weeks or a month to see if his hormones settle down.
She would improve faster being with her hens, without him around for a while.