I couldn't find a video of Shirley talking about Hayley at Soundwave so I had to find the second best video I could find of her. But anyways, here's what was said in this article on Faster Louder...
Paramore chose a lucky girl from their crowd to sing with them while the audience chanted her name. They were followed by Garbage, whose lead singer Shirley Manson praised Paramore’s Hayley Williams for not being afraid to rock and encouraged women in the audience to join a band because it’s “cool as fuck.” Their performance of ‘I Think I’m Paranoid’ was accompanied by the blast of a horn from a train pulling into the Ekka station – presumably the conductor was a fan.
Article link http://www.fasterlouder.com.au/news/loca