If she needs space, she needs space. Best thing to do is to leave her to it for a while, and then catch up with her. Don't try and make her talk, if she wants to talk to you then she will come to you with any problems she might have. She said that she needs some space, she wont appreciate you trying to help her right now so wait, give her a couple of days, ask her how she is feeling and ask if there is anything you could do to help.