Marvelly discussed the culture of online bullying of girls and the sort of online hate she sometimes received for her writing.
''If we want true equality, we need to put the spotlight on men,'' she said.
Men needed to ''stand up or move sideways'' and accept a role in making society more equal.
Women needed to be equal in the workplace, get paid the same as men, and there needed to be more open conversations about who stayed home after childbirth to look after babies.
People also needed to change the way they raised their children, making boys and girls resilient, but also compassionate and empathetic.
''Women can't do all this on their own.
''It's time for men to step up.''
Marvelly said New Zealand had much to celebrate in terms of women's equality, but ''we can't take our eyes of the ball''.