Easily uncross the line, and SHE would like that? Wow. No, you cannot uncross the line and she is totally oblivious to the pain that SHE caused for you. Like others have said, keep all emails in case you need them as evidence. I know that you asked her not to respond in your email to her, but depending on the laws where you live, you may need to send her a separate and very firm request for no more contact of any kind, stating your intent to call the police if she does not respect your wishes. And if she continues to contact you, follow through so that she knows you are serious.