I was just reading some of the posts concerning Verin channeling in the stedding and I had a thought of how to explain her reaction. The ogier brought out is described after her to touch to not have a soul. Aes Sedai can sense minions of the dark one such as trollocs and draghkar, but we have seen on countless occasions that Aes Sedai and warders have a hard time sensing Grey Men, who incidentally do not have souls. This would explain why Verin draws back after touching him and in my mind proves that she didn't channel.