In the case of two actors connecting with each other and trusting each other, our bodies have memories without us having to consciously think about it, so rather than think, "Oh, I must think about my daughter dying," you just let that go and trust that you have all the emotions you need in there, and by losing yourself in the scene, that stuff kicks in without having to spend the day thinking about horrific things happening to your own child.
I think parenthood is a wonderful balancing act. On the one hand, you want to spend as much time with your children as possible. On the other hand, you want to set an example for them to see that you're fulfilled in your life and in your work.
A parent can seem very kind and gentle, but as any child knows, as soon as that parent gets stressed, they can suddenly turn and get a bit angry.
