and she just said, oh, i'm just trying to sound tough. so she denied this to be for real. >> reporter: but that's not the way sam's sister saw it. when detectives showed those texts to cindy, she was dumbstruck. >> i could not believe what i was reading. this is someone who's been in my family for almost 13 years. even talking about it with you now i have chills. >> reporter: those texts, she said, proved just how much danielle hated sam and wanted him out of the way. and she's convinced danielle manipulated michael to feel the same way. do you think that danielle had anything to do with your brother's death? was she somehow directly associated? >> i think she is. i hold danielle dreher as much