The bit that gets me is that HCC said they only have a legal duty to prove they sent the fine. Not for it to turn up.
They are basically saying it may not have turned up, admitting the one that did was paid and they now have to prosecute as a result.
But it HCC. They aren't known for common sense attitudes so I'm leaning towards believing the mum in this case.
I think it's been screwed by her defending her reason to take him rather than the actual point that she didn't pay the fine because it never arrived.