Asking people to do weird and inconvenient things to avoid an attacker is blaming the victim. What next, move house, change her name and carry a gun? She has a life and a career to get on with, and an ailing father to support. And we all know how well blocking phone numbers doesn't work.

The police could have got the attacker's ISP and phone provider to silence him. They didn't. They didn't do their job.

The offender seems to have been mentally ill and not in control of his actions. That doesn't let the police off the hook. Their remit is protecting the public, not just dragging people into court.