Well technically the Queen is part German herself, lol. Anyway, it's not like she went there dropping bombs or had anything to do with it at all.
The royal family don't really hold any power now other than being a tourist attraction and something for the idiot press to constantly follow around.
So basically they want us to apologise for a war they started 60 years ago?
"Don't mention the war. I mentioned it once but I think I got away with it alright"