I have immense respect for this lady - her bravery was legendary, quite honestly.
Campaigns like this I don't have too much time for, though. Banning "pointed" knives is quite simply ludicrous and won't work on so many levels, the obvious one being that it's extremely easy to make a sharp pointy thing, even if it didn't start out t like that. Also, there is an endless list of perfectly good reasons to have them.
The even more strikingly obvious reason why this is a total waste of time is that, lets face it, the person who did this was so fanatical and so determined that he'd just have found a way to do it anyway. Having no access to a pointed knife wouldn't have stopped him.
You often see people who have been subjected to tragic situations who end up fronting campaigns like this and I often get the impression that it is rarely them who start them. They, I think, are often co-opted by others for whatever reason.
I've never been one for conspiracy theory rubbish but these things often strike me as an attempt to divert attention away from the real and far more serious issues behind a particular problem; issues which require actual, real world, hard work to tackle that society either can't, or doesn't want, to address.