Dreaming
You probably didn't mean to imply that Tabak was innocent of the murder of Ms Yates, but the way I read your post suggested that his defence was valid and/or accepted.
Ms Yates suffered over 40 injuries in the attack that killed her. Tabak may have pleaded manslaughter, but was found guilty of murder.
I'm sure that's what you meant in your post, but your wording In that instance, he neither intended to kill or to cause really serious harm but could be considered responsible for her death sounds like you're describing what he was convicted of rather than his plea.
I'm positive this is not what you meant, but I just wanted to clear it up, otherwise it's really upsetting. Thank you.