private moment with his oldest daughter. >> i went out there, and i told her that we did it. she could be proud of everybody. >> reporter: todd's been back many times since. lisa's grave is a special deeply personal place for him. he designed her headstone. what do the figures in it? >> the first thing i would do when i started sketching it is i would draw a heart out. for some reason in my head it should be in the shape a heart. second thing i would put is a mother holding a baby, andleasea and i had -- and lisa and i had this thing we would say. we texted each other and everything, it's from "the notebook," movie. we always said, if you're a bird, i'm a bird. meaning -- whatever you are, i am. so in the era of this i made two birds in there. by the time i got it done with,