Hitler was an utter failure and his strategy of war was pathetic. He ended up with only one loyal ally; an Asian island that got nuked by intellectually damaged Americans whom didn't understand the concept of negotiation.
That entire war a disaster beginning to end. The only thing that came good of it was some scientific and technological research, most carried out on Jews.
Firstly, I don't think this is what exactly happened and even if it did happen and he genuinely asked 'Where are you?' it was merely as a symbolic test to see if Adam would reply immediately or hesitate indicating a lack of obedience to the almighty ruler and perhaps a deviance to the way of the devil; withholding information to your saviour is the same thing as indirectly deceiving him (even though he already knows the answer)
Anything can, in hindsight, be deemed to have been a succeeded plan from the beginning. Hitler's plan was world domination, his plan utterly failed. Killing off non-Aryans was just something he left his minions to do to stir fear. Hitler had zero attributes of the Aryan race he so deified other than the fact his ethnicity was Caucasian.
In a way, he did succeed by killing his wife and dog and himself with poison since neither of those three beings were strictly what you would call the Aryan race.
Good point, unfortunately for you though, the mother isn't omniscient; she doesn't know everything that is, has been and will be. Thus, she doesn't carry the burden of knowledge when creating the monster that she ended up nurturing to adulthood.