You're not helping the stigma against mental illness by automatically assuming she committed the murders as a result of it. You are not a psychologist, more importantly not her psychologist, so you do not have the authority to make that kind of a determination.
Claiming she committed the murders because she is mentally ill is an ableist act.
Being mentally ill doesn't mean you're going to murder anyone, certainly not babies.
You're ableist, and unempathetic.
So a baby murderer should have been allowed to keep her job and continue to put innocent lives in danger because you 1) baselessly think she's mentally ill, and 2) think that a condition as extreme as you're implying shouldn't be regarded with consequence.
That's because the mental health excuse is just that: an excuse. They don't actually have the evidence to back up the notion that she's mentally ill other than her diary entries. Those entries could have been forged for all they know.
They not only undermine the very real damage that woman caused by using mental health as a cynical attempt to try to give her an out, they also are being extremely ableist. Committing egregious crimes != mental illness and for them to draw that equivalency caters to the stereotype that mentally ill people are dangerous.
These are people who know that and who would call others out for being ableist, yet do so freely in threads like this without consequence or a second's thought from anyone else. Ask yourself why that is.
A large number of people would disagree with you and they would be right to do so. Your opinion does not mean fact.
Nothing anyone does will bring those poor children back from the dead. That's not the point of justice. The point of it is to fulfill what the people think qualifies as moral righteousness. It's what the word actually means if you look it up in a dictionary, and for the majority of people, they believe the death penalty in cases like this is right and I for one can't fault them.
The point of wanting her dead isn't to bring the babies back. It's to get rid of her, permanently, as they rightfully should. We know prison isn't enough because others have cited the case of another baby murderer who is now up for parole and may be released, completely defeating the point of life sentences in jail.
murder is wrong (unless I think you deserve it)
And that's how many philosophical schools of thought work, and they are quite honestly more valid than yours. Deontology is a terrible moral outlook and cases like this is why. We can't have a moral and just society if we only judge morality by action and not by the circumstances of that action, who is affected, who commits it and why, etc.
What you're asking for is actually unempathetic, cruel, and quite honestly really dangerous for the community.
They do it because they choose to. Regardless of all other circumstances, the choice is always theirs.
So like, what happens when one side gets a hold of nukes?
That's assuming she committed the murders out of mental illness, which is entirely baseless and an ableist claim to make.
You are here with a clear agenda and what you're doing -- undermining the seriousness and reprehensibility of her actions by labeling it as mental illness -- is morally repugnant.