Allison Pearson: 'Almost all of popular entertainment is dedicated to the blood of men'

15 years ago Allison Pearson published her first best-selling novel I Don't Know How She Does It - now she's back with the sequel. Her character Kate Reddy is approaching 50 and dealing with parenting through the menopause. Allison talks about the influence of social media as a parent and the importance of female friends in middle-age.