Emily stayed at home with her granny and it was a real wrench leaving her for three and a half weeks during the games.
But I have been incredibly lucky to have a mother who was prepared to care for both my children – not ever having to employ a nanny has certainly eased my guilt; I am not sure I could have had my career without her.
The dream is to secure gold this time, but so much depends on everything going right on the day, so you have to hold your nerve.
I am told that my sporting ambition comes from my father, but I couldn’t know because six months before I was born, he suffered personality-changing head injuries in a motorcycle accident.
Here they talk about what it is like to be mother and daughter rivals.