Thanks for your lovely understanding comments my friends. 
I think I'm in quite an emotionally fragile state at the moment (the brother in law saga continues) and that's why it affected me so badly. And of course Kitty is right, I did put myself in the place of the mother; my own sons are similar ages to hers. No further news about the casualties yet, but in a small town like this news gets around quite quickly so I'm sure I'll hear something soon. This town is usually a haven of peace and one of the safest places in the country to live, but just a week ago a holidaymaker was killed here by a local man in tragic circumstances. The community is still reeling from that.
Anyway, I'm off to my bed soon and hoping that the week ahead will improve.