The actress, who plays Stella Price in the long-running ITV soap, said she was on the London Underground on her way to a party for co-star Charlie Condou when the trouble started.
She told ITV's This Morning: "It was about 7.15pm and I was minding my own business.
"In fact I was reading my script on the train with a pair of reading glasses on, which their first question was: 'What are you wearing sunglasses for on the Tube?' I said: 'They're actually reading glasses.'
"There was about 10 of them that got on and they said 'It's that Stella bird from Corrie'. I went 'Sshh, don't say anything'.
"It just got really heated. It was unpredictable behaviour which I think is quite scary and you can tell that they've been drinking.
"When people are en masse -- they were only 16, 17 -- but it got very, very heated and it wasn't very nice.
"And the worst thing was that nobody did anything. One girl actually when I came off said: 'Are you okay cos that was really horrible?'
"It was abusive, verbally very, very abusive behaviour which just isn't very nice actually to anybody. You don't need that, and when nobody does anything.
"It's a sad indictment of our society that we don't get involved. I think if it was me I maybe would have done something but you don't know. It wasn't very nice."