You know, that puts an old clip I saw of her and the screenwriter for her movies into better context.
Just go to 1:50 and watch a minute of it.
BTW, that "I wasn't won over by you yet" comment from her was literally only because he was American. When she first heard that he'd be writing the screenplays for the movie she got pissed off by that fact alone, even when she admitted she saw a previous movie he wrote for and loved it. This was during the Bush era, mind you, so anti-Americanism was rampant in Europe. In all honesty, this is where her "Only Brits" in HP movies came from. Fans keep saying, "That means the whole world, not just America, so it doesn't mean she hates Americans!"
But come on. America is the movie capital of the world. What OTHER actors would she be thinking of? Not saying I believe she hates Americans (but she's a leftist, so I wouldn't be surprised) but it's kind of a bitchy move to judge a man just on that fact alone.
But then she stopped giving a shit when he paid her author-insert lip service. -_-