She doesn't have children, so I suppose she wouldn't necessarily have researched it. She's Cambridge educated to masters level and works in the City.
Can't remember why but we were talking about breastfeeding and I said breastmilk far healthier than formula. According to her that's not the case, there are 'schools of thought' as to whichever is the healthier, and that there is no definitive answer.
This really shocked me, I mean, fine not to have an opinion, but to have that one!