Liesje
Blue Crack Addict
Yes, but you don't lose your accent and start sounding like an American just because you've lived in America for some time (two years, to be correct, in her case). Usually you don't lose your original accent, unless you're trying to sound like someone else.
I think it's a shame, because the Irish accent is cute and I never understand why people are trying to deny their origins by losing their accent.
I don't think she ever had that strong of an Irish accent though. Ali and Bono don't, at least not to me (I'm not at all Irish). I thought I remember reading that people from their area don't typically have the strong Irish accents.
My mom's younger sister has four kids and my uncle was in the military so they moved all over. In that family I have four cousins and they each speak differently because of where they grew up, and incidentally the cousin that's my age has no real accent at all because she moved around so much at an impressionable age. You can't really peg her as Midwest or NY or southern or California.