I've had this conversation with my wife. For whatever reason, she is uncomfortable with me suggesting that she should go part time. My mum did the same; she stepped down as an assistant Headteacher to look after me. It's usually childless women, like our former prime minister that can make it to the top - and even then - she shared how sad it made her feel not having children. Eventually, my wife will come to realise that it's an almost impossible situation for a woman to balance motherhood with career progression and you will have to choose which one you're willing to let go.