i was like, "she's baring all." >> kelvin cowans doesn't just believe her.ts was crossing the line. >> while they were dating, and even after they moved to houston, she completely convinces him that she had nothing to do with lorenzen's murder. >> i'm like, if she had done something, they'd have her by now. i mean, i never would've moved away with her if i thought she was a killer. >> sherra moved out of memphis because she was tired of the suspicion and all the negative publicity she was receiving here. >> she moves to houston, appears to live a quiet life. but one problem -- kelvin said he never could quite get used to sherra's love for money. >> that was like, oh, my god, not about money again. >> cowans says they started arguing, because, he says, long after the fight over the insurance money, sherra still wanted more from the estate. and he claims it blew apart their relationship. why was it the last straw? >> greed. i cannot believe that your apex of life is still, how much more money can i get? >> and you couldn't live with that? >> i couldn't. >> the