If my brother hit my cat super hard, will it still love him as much as before?

My cat was being bad today,so my brother hit her as hard as he could( he's an idiot). The cat went inside on of our rooms and hasn't come out in a while. We got her at 5 weeks old, and we have had her for about a month. she followed mybrother around everywhere when we brought her home. Ihitmy brother untili he cried for what he did. Will she forgive him, then everything will be back to the way it used to be?