Collins, who joined the Weatherfield serial as feisty Rovers landlady Stella Price in June 2011, drew negative comments from viewers after her debut for not apparently sounding Mancunian enough in her role.
It was reported at the time that Coronation Street cast and crew were angry over Collins's appointment as a result, suggesting that the soap's credibility would be damaged, although Antony Cotton (Sean Tully) later took to Twitter to deny the rumours.
Talking to The Sun, Collins has now revealed that she considered resigning from Corrie after the backlash from press and the public, saying: "Having been a jobbing actor for so long, I'd forgotten the attention you get when you're in a soap. It was a real shock when the press criticised my accent, because I'd 'done Northern' before and never been criticised for it.
"I did get to the point where I said to people high up, 'Should I just resign? I've had enough. I can't do this'. But they said no, absolutely not. They told me to fight it and get through it. So I did."
However, the 50-year-old said that she still cannot bear to see herself in Coronation Street, adding: "The enormity of the criticism made me too scared to watch Corrie on the telly. I still can't."
Collins had said earlier this year that she wants to stay on the soap "for a long time", and that Corrie fans now like her accent.