missy and harry nelson had it. three kids, kids' partners, grandchildren. until.he morning they found their beloved eldest child, their jessyka, just 28 years old, dead in her own bathtub. but who was she? detectives needed to know and so did we. >> everybody loved her. very bright. both my girls were really smart. >> very smart. >> reporter: jessyka was ashley and matt's big sister. >> she was very outgoing. she just always wanted to have fun. but, you know, the older we got, the more she was kind of like another mom to us. and, you know, she would always be there. even if we were fighting, if we needed her, she was there. >> reporter: big sister to the whole extended family, her cousins, her close friends who were more like siblings, her siblings' close friends who were more like relatives. >> she was always really nice to everybody. >> reporter: laura wonder had been a friend since grade school. >> she just wanted to have a good time. she was just kind of -- i wouldn't say crazy, but she just -- >> reporter: goofy? >> -- was kind of goofy. she did whatever she