I think that The Bride of Frankenstein greatly portrayed science as something that could do and accomplish numerous things, even the impossible. When the scientist made a female version of the monster, I think that this portrayed science as both good and bad. Good in a sense that because of science, the scientist was able to create another invention that could possibly solve one of their greatest problems (making the monster happy and contented so as him not resorting to hurting anyone else). Although this is the case, there was a bad effect as well. When they invented the female version of the monster, they did not really expect that their new experiment would be scared of the monster as well. They were not able to anticipate this. This only shows that science still has its limitations. Also, the question of it being moral or not comes into picture. Is it moral to create another person using the organs and parts of another dead person? Is it moral to use illegal science in order for an experiment to be successful? Is it moral to create another being that could be as evil (depends on whether you see the monster as evil or not) and unnatural as the monster? Well, I think that the limitations of science could be answered by morality. The female version of the monster was not at all human-like because it is very much impossible to create another human being not undergoing the natural process. To relate it to morality, the only entity that could create a living person is God. The female version of the monster did not love or even like the monster back because science can't make someone love another person. All these exhibits the clash of science and morality.
In my opinion, making the monster dumb worked. It conveyed the message that things which aren't supposed to exist but is existing because of using science illegally or wrongly could only turn out into a disaster. What's worse is that you can't really say the monster was all that good. Yes, he sometimes felt pity for other people and he sometimes did not harm some people, but there were more instances wherein he harmed good and innocent people than not. This only goes to show that those experiments which shouldn't have been done are most likely to be a nuisance and a great problem to society.