Sorry to hear about this incident HV, it's simply not on and I agree with what you say about areas not being run down ghettos, but having plastic gangsters, young youths acting like they own the place while having one brain cell to share amongst themselves, this describes many a youth in my area.
Last week at 3am, someone entered my back garden and tried to steal my bike, but they got a shock when the rape alarm I had fitted to it went off and they dropped the bike and ran for their lives, such brave people they must have been. Therefore, I'd recommend that females carry one of these with them, not that they should have to, but they can be quite effective.
I've had no desire to report this trespass and attempted theft to the Police, as I don't think it would do any good. But I do agree with what you, nemesis and Hoops say, in that she should report it to the Police and the Police should make it their priority to at least attempt apprehend the scum, even the presence of the Police visually and asking questions in the area may prevent it happening to someone else, and as Hoops says it could be the start of escalating behaviour, someone else could come off worse if nothing is done.
Additionally, I'd also have a go at what pedawson suggests too, building a community spirit is always worthwhile.
