have he been charged with any offence's?
Ok. So why does she need an injunction if he hasn't done anything recently?
It is not that simple.
What specifically is he doing?
Why won't the police act?
They would normally if these facts are accepted.
It is very definitely enough. The fact that they are refusing to act leads me to suspect that her allegations are not thought credible. If that is so, then that is something she needs to consider. There is no point in making applications and losing as she will end up paying costs.
Seeking an injunction is easy enough.
However, I have never known the police refuse a harassment warning.
You will find the procedure here
Can I clarify anything for you?