Hi messymammy I agree, TV3 has a lot to answer for, and not just in regard to this case!
I admit that I'm a bit sensitive to how the coverage of this story went, because though I've lived in Ireland for more than a decade, I am originally from the same region as where this awful thing took place.
I felt that a lot of the media coverage here (in Ireland) played on the idea that this was a naive, innocent "one of our own" who was set upon by nasty, evil American high schoolers like the ones you see as the villians in high school drama TV and movies.
Though that TV3 documentary was awful (not just because of its content; all of TV3s docs are awful!), IMHO it was an article by Donal Lynch in the Irish Independent that best illustrated the media bias in Ireland regarding this story. Lynch wrote of how the "girl with the gorgeous, lilting accent had arrived full of dreams for a new life... and now the citizens of the most Irish-American of all US States would send her ashes home in a jar." He contrasted that gorgeous lilt with the "broad, flat accents" of the locals and described South Hadley as a "fairly grim, lower-middle-class town" in stark contrast to Phoebe's home in Clare, "a small seaside hamlet which nestles on the Co Clare coast," and concluded on the comforting 
note that "Phoebe is at peace, back home in Co Clare, where the Mean Girls of South Hadley can not touch her."
Lynch also names and shames a local girl who was not one of the bullies for "speak[ing] on camera to reporters about her shock and upset at Phoebe's death" and days later being pictured "laughing at [a school dance] with a boy who had gone out with Phoebe. He posted the pictures on his Facebook page. Both [the girl] and the boy refused to comment when contacted." Why were they contacted? To explain themselves to Donal Lynch? For acting like kids? Tell me that doesn't sound like a witch hunt.
As an American (who is from that region and speaks in that accent!! 
) I was offended by the tone of the coverage, but as an (naturalised) Irishwoman who works with at-risk youth here, I was even more that the Irish press chose to make this into a story about how awful American schools / teenagers are, rather than recognising that bullying happens in Ireland too, and youth suicide is a huge issue here. Lynch wrote that "initially Phoebe's death was treated as another teen suicide -- a tragically regular occurrence in US public schools" but neglected to mention the fact that Ireland's youth suicide rate is higher than the rate in the US (15.9 per 100,000 compared to 10.2 per 100,000 :( ).
As potoftea said, Phoebe was also bullied in that lovely seaside hamlet in Clare, yet the press here ignored the opportunity to highlight the seriousness of bullying in Ireland and instead treated Phoebe's death as a tabloid story complete with foreign baddies.
Sorry for the rant - directed only at the Independent, TV3 and their ilk, not at anyone here. Obviously this has been annoying me for awhile. Is my righteous indignation showing? 