"What if you for example stole a parking space that someone else was waiting for in a busy car park and that led to an argument between you and the other driver and they then had a heart attack as a result. Should you be prosecuted for murder?"
This is a ridiculous comparison. She wasn't charged with murder but with culpable homicide.
He died as an (unintended) consequence of her committing a crime.
Stealing a parking space is not a crime....
Let's not forget she threatened to " end" a few of his colleagues too!