is, for most mothers, the world. >> reporter: jeff carlson had to tell his daughter, paris, her mom was not coming back. >> wasn't easy. what do you say? you don't know how to prepare them for the future of living with this, he deprived her of her mother. >> reporter: later, marie's family and many others gathered for a celebration of marie's life. they did her favorite thing. they sang karaoke. and nowadays, when marie's daughter, paris, comes to visit her cousin, esta's daughter, the two sit down at the piano and play. make music, just like their mothers, years ago. and grace? >> i wanna tell her all about her mom. it's one of those where i just -- i wanna show her, you know, like, "your mother really did love you."