. >> they're divorced now, but tracey and todd caldwell watched their girl grow up unstoppable. >> we're not just talking about recreational saturday night. >> anything she did, she had to be the best at. lisa was a teenager when her parents divorced. todd remained an active fwauath. he was working as a depty in the wapello sheriff's department. one was his occasional hobby. he'd take out his sketch pad from time to time. and then he met and fell hard for a nurse named amy. before long, he was starting fatherhood all over again. with twin daughters this time, he was getting lots of help from lisa. she was the twins' default babysitter. she was more like a second mom to the twins than a big sister. >> she was just a caregiver to anybody. >> reporter: you had a very close relationship? >> uh-huh, very. i would get into bed with her. we'd watch old episodes of the golden girls. [ laughter ] >> reporter: that's a sweet relationship. >> yeah, and she always says that i was dorothy because i'm such a grouch all the time. [ laughter ] but yeah, that was my favorite time with lisa. i'm so lucky.