Not that I disagree with you on the whole "she can't get pregnant" thing, but we can't make something akin to Artemis in real life neither, yet there she is in the story. So why enforce a limit on one aspect of science in the story but not the other?
And if we really do want to go down the science path, artificial or not, literally every physical thing in our daily lives is made up of protons, neutrons, and electrons. (Yeah, I know, there are other things like quarks, bosons, anti-matter, etc, but those aren't exactly daily life thing, are they?) And yes, that includes DNA, the building blocks of life, as well. So, in a sci-fi world, why not?