I just had a massive rant on this last night, actually. She's horrendous, and she's so OTT with the Geordie speak - my other half is Geordie, and I spend 50% of my time in Newcastle, as well as working with them in London, and she definitely puts it on. No one says "howayyy man!" as much as she does, as well as reeling out every Geordie cliche in the book.
Her voice (not accent) really grates. She's utterly selfish, ungrateful, hates seeing anyone else do well, self-destructive, and annoying as hell. I wish she'd leave.