Slightly off topic but your example reminded me of when I was living at home Matty:
We lived on a farm, a couple of miles past the end of the bus route past the junction that had very few padestrians (it led nowhere and was over a motorway).
A young girl lived (I assume) in one of the few houses in the little lane before ours and she always got off the bus first and would then walk nervously in front of me glancing behind her every now and then.
Of course, I wanted to get home and tend to walk fast anyway but I could tell that me being behind her made her nervous.
One day, while I was still on the bus, I said "excuse me but ..." and told her where I lived etc ... and if she wanted she could walk with me or let me go on ahead (I said I imagined me walking behind her made her nervous).
This story doesn't really lead anywhere because I bought a car shortly afterwards but I think you're right - if possible, be aware of the situations but it isn't always possible to avoid them.
The reason I am so against the 'slander' thing is that we had that used against us (not to do with kids - to do with 'apostacy') and it can be damaging.
There is a big danger that they will start to use things like this as another 'weapon' - we know they already rubbish people who leave as they cannot stand to have someone quit and be happy / successful so there is a danger I think.