Creator vs. Created

As a creator, do we have complete control over what we have created? Are we ultimately responsible for how our creation turned out?
The questions can apply to nearly anything. If you are a scientist that creates a vaccine that eventually turns people into zombies, are you responsible for the end of human race? Or is it out of your hands because you could not possibly know what was going to happen? If you are a parent that raises a child that turns into a serial killer, are you responsible for the deaths of innocent lives?
There are no specific or correct answers to the questions. Each person probably has a different view on what is right or wrong in these situations. Who do you blame? Or do you blame anyone at all?
In Mary Shelley's Frankenstein, the question of creator vs. created is a huge theme. Who's fault is it that the monster turned evil? Should Frankenstein be blamed for his lack of action to stop the creature?
In my opinion, Frankenstein should have cared for the creature he made. Imagine being completely rejected by the only person that would ever want you... your creator. What if when we were born, our parents disowned us and left us to fend for ourselves? Every time we went outside, people were horrified. Obviously your life would be miserable and you would have so much hate and anger. If Frankenstein had gone after the monster and cared for him, or even stopped him from going loose, no one would have been killed. He should have taken responsibility in the beginning, so he didn't have to take responsibility for the horrific deeds later on.