baby and james, all for herself. that's what this member of the inner circle believed. >> but i -- did i hear that from marie, that marie wanted james? >> reporter: did tanya strike back somehow? fight for her marriage by getting rid of marie? listen to how church members quoted tanya's words. >> she basically was like, "james would never be able to do that, but i could." >> i told him, you're not capable of killing her." but tanya leans over and goes, "well he couldn't, but i could." >> so wouldn't that lead you to, like a bloodhound, direct to tanya? >> she certainly would have a motive. >> she would. >> reporter: tanya, now the only mother figure in grace's life. did she know more than she was saying? did she do something? coming up, a confrontation in the congregation.