Mrs. Yates is certainly guilty of killing her children no doubt.
As I understand it from her records that are online, she has been in and out of institutions since 94' - she's also by the way had children since around that time.
She had tried to killer herself (steak knife) to prevent herself from doing harm to her children (so she is documented as saying) which was documented before the case regarding the killing of her children.
This woman should have never had any more children after the first (it's a Christian thang - breed and God will look well down upon you

) and she should not have been released from any of the institutions she found herself in (that would be an insurance thang - your times up - pay up or ship out.) How can you let a woman like this be in the company of children or the care giver of children??
My first reaction to this case was that this woman should die - no questions asked. I'm not sure how I feel about it now that I've read pages and pages of her instituional records. She's certainly guilty - but I don't believe she is entirely responsible.
She may fry for killing her kids but she shouldn't be the only one to foot the responsiblity of the loss of life.
Regardless of the outcome - her children will remain dead.