"I think we all need to be much kinder to each other, whether you're a man or a woman," Blunt said. "There is a tendency in women towards being a bit judgmental of each other, particularly in the domestic environment. Whether you can 'Keep a man' – a phrase which I hate – or whether you breastfeed or don’t, whether you want to have children or you don’t, whether you can have children."
"Women are sometimes made to feel to be rather defensive about their decisions," she continued. "I don’t think that's right. Nobody knows the ins and outs of decisions and we can't be too harsh about them."
Blunt also addressed why she was attracted to playing the lead role in The Girl on the Train, saying it's rare for a lead female character to have as many flaws as Rachel Watson.
"It's so unusual to have your lead protagonist be female and a blackout drunk," Blunt said. "Women are often required to be an ideal of some description: pretty or likeable or witty. But with this character, you feel you just don't want to breathe the same air as her. And that sort of toxic persona, physically and mentally, I'd never explored before."