Mr & Mrs Watts haven't lost their son, Mr & Mrs Rzucek have lost a daughter and in the worst way possible. I understand Mrs Watt's despair at what her son has done but lashing out at Shanann isn't helping anyone but herself. I've got adult children, 2 daughters and a son, (29 yrs old), and I find it hard to relate to her hatred of her murdered DIL, my mind can't take me there. She's angry because her son won't reach out to her and she's still blaming Shanann for it.
She should get legal advice and keep her opinions of Shanann behind closed doors but it's too late now. I am being judgmental, I won't deny it but I'd hate to be in the Rzucek's shoes having to listen to this woman after what they've gone through. Her anger at the justice system and DIL isn't rational, she's a judgmental person herself, so I'm sure she wouldn't give me sympathy if I were in her shoes, she's certainly not thinking about the Rzuceks and how they're grieving.
She should ask her son why he did it and accept his answer. Prison isn't death, as she so described it, maybe, it's the death of the son she thought she knew and that's what's difficult for her.