Just have to say, I completely agree with Kanzaki on the language barrier thing. I know from personal experience, because my uncle speaks English and he's learning Japanese because of my aunt, who is from Japan, and she is learning English just fine~ From what I can see, my aunt and Ayu's English are around the same skill level, so I see no difference. My aunt and uncle are perfectly happy together, why can't Ayu and Mannie be?
Language thing aside, I really agree with the first post. Completely. This is Ayu's life, she can live and love however she wants to. If this was a mistake, then it was her mistake, she will learn from it, and she will grow as a person from it. She's already proven that she is a mentally strong person~ Chances are though, that it wasn't a mistake, and she will live happily, the way we should all wish for her. Either way we should support her not only as her fans, but as people who actually care about her