The reason she wanted me to photograph her family was simple. She's not in a lot of her family photos. And photos that include her AND her husband? Forget it. It just doesn't happen.
I think a lot of us can relate to that feeling, whether we're the photographer in the family or not. In Tish's case, she has a remote, and she's working on getting in the shot more often.
But setting up your own photos isn't quite the same as having another person document your family's life. Having me there with my camera meant she could just be herself, without having to plan for a photo in the back of her mind. She could see what I saw, without the filter of her own eye.