and together, they join the jehovah's witnesses, an austere christian sect that demands strict rules of behavior. their daughter lizz is now in her late 20s. what was it like growing up as the only child in the melgar family? >> you know, i always had a lot of love and attention. i think i might've taken that for granted as a teenager when, you know, you go through your rebellious years. >> reporter: lizz's cousin marissa remembers looking up to them as role models when she went to visit. >> sandy and jim were just very loving towards each other, respectful. you could just tell they always had each other's back. they were always helping each other out. i liked watching them together. >> reporter: as daughter lizz grew up, she became especially close to her mom, sandy. what was her personality like, in general? >> she's just very caring and loving and nurturing. she was also a lot of fun. she knew how to joke around, tell a good joke. you know, i just felt like she was the embodiment of a mother, just the kind of person that you would picture when you think of that word. she was just