The bond that exists between Moguior and Andrew and his mother is very strong and I doubt that it will be broken.
moguior and andrew will behave like puppies with her and yes, andrew will behave before his mother and not make mischief with her because he knows the punishment he is going to receive.
Lupe knows the weaknesses and how to control both, with mog there is no problem he is always the good guy but andrew........... I don't think they need explanations for that.