How would i let Apple know this happened?

Before christmas my Fiancée was in bed with her iPhone 5 on charge in the bed with her as she has done for many years (no bed side table on her side). In the night she was awoken by a sharp pain to her arm that made her jump and she was in a lot of pain. She noticed that her iPhone was unplugged, thought she had a nightmare about being abducted by aliens and went back to sleep. In the morning she had this on her arm (rubbish picture, i know)

I took a look at the lightning connection on the USB and one of the pins was black and it didn't work anymore. I don't have the USB anymore because i got it replaced by my local Apple store who was as stunned by the situation as us.
Obviously, we're not after any sort of compensation. We just want to let Apple know that somehow this happened.
So 1)Whats the best point of contact? 2)Is this normal and apple wont care? 3)Are we just being stupid about the whole thing?

I appreciate the normal replies.
I guess i just thought this is a little out of the ordinary but maybe not.
It was the fact that the USB ended up not working that got me, i mean surely there isn't enough power going through there to cause a current with someone's skin, short then melt the inners of the USB. The wall plug still worked afterwards, i'd of expected the fuse in the plug to blow if anything bad was happening.
Of course, i realise she probably ended up lying on it, it got pretty hot under there, her skin potentially began to sweat and that's how this happened, even if the lightning adapter is waterproof.

jessica. said:

Waterproof doesn't mean that water + electricity doesn't have consequences. If this really happened then tell Apple. Be prepared to explain why you waited over a month to actually report it.

Click to expand...

Of course it really did happen. I've waited this long because let's be honest - it sounds stupid.