"What it looks like, is that the abuser uses certain patterns of behaviour to establish and maintain power and control over their partner," she said.
"Although often, it includes physical violence, physical violence doesn't have to be necessarily present. There is verbal abuse, the name calling the put downs. You're fat you're ugly you're stupid, you're a whore."
The panel discussion was part of the United Nations' Spotlight Initiative To Eliminate Violence Against Women and Girls.