This piece of shit has caused irreparable and traumatic damage to an innocent woman and is trying to hide behind a mental health issue.
Well, frankly, even if they were not mentally well that shouldn’t absolve the danger or actions. They need to be removed from society. They should get some help. But the length of sentencing should not include leniency. They are criminally responsible.
Ah, we got into territory of: I’m not at fault, it’s circumstances/environment that shaped me.
In the end, practical reality is that whether it’s true or not, public good requires assumption of free will on your side. Aka, you’re responsible of all harm you’ve done.