So this form may actually help.
When she made the allegation of sexual assault and controlling and coercive behaviour, she will have been asked if she had ever been stalked (in a roundabout way).
If she was asked about stalking in February and the police didn't talk to you it likely means she indicated she had never been stalked by you - otherwise the police would at least had a word. She can't now claim stalking a mere for months later.
Just had a look, still called DASH I think and you can find the form at the bottom of this page. Think you should go straight to download the form and you'll see what I'm getting at.
www.dashriskchecklist.com