You don't need police intervention. The definition of stalking is "two or more" unwanted communications. You have several IN WRITING, as well as you telling her not to contact you.

Instead of calling the police, take everything to the courthouse (or see if there's a way to do it online) and petition for a restraining order.

That creates a legal record proving her to be the abuser, so you can clear your name. If she is also slandering you, you can sue her for all those nice things people are giving her on grounds of defamation of character. Just find proof that she's slandering you (or libel)

Good luck