December 2, 2016 Lizzie O’Halloran. Author of Perfect Mum Author's Series, Parenting Author's Series: Perfect Mum by Lizzie O'Halloran December 2, 2016 Lizzie O’Halloran. Author of Perfect Mum Author's Series, Parenting As part of our Author's Series, Lizzie shares part of her story of motherhood and how it has inspired her to encourage other women to be the best mother they can be.