There is justice, after all.
Yes, Andrea Yates killed her children. For that, she will answer to a higher power.
There were extreme circumstances that led her to kill her children. For that, she needs special help.
I hope she will get the help she needs. She needs to recover from the emotional abuse heaped on her by her husband that led her to do such a heinous thing. And once she gets that help, she'll need help to be able to live each day knowing she did it.
She won't be skipping around the institution singing "I got away with it!". She will be grieving every day, wondering how she could have killed her babies.
Strapping her to a gurney doesn't help anyone.