I'm going to take a wild guess that the woman is actually the mother of both the lord and the child. Or that the child is a copy/replacement (of the male lead) for a grieving mother that never gets to see her child anymore. Or something wacky like that. No malicious intent behind it or anything...
Are we just going to ignore that the teaser image of the original main character of the story that we see on page 18 looks suspiciously like a gender swapped version of our MC?
Not necessarily. There's a reason you see things like, "magic race" and "demon race" sometimes used interchangeably in sloppy translations. Apparently the "ma" of "mazoku" can share meaning with both magic or demon, iirc? I remember seeing it in TL notes once.
Might be the same issue with our...
After all that tension and build-up, her name being Alicia Swordia broke me and made me laugh. I was thrown off by her first name being Alicia instead of something like Arthuria, but that second blow of Swordia out of nowhere broke me.
"What if we give the royal family the name 'Sword'?"
"No...
Are we just going to gloss over the fact that MC's sister said that the character that looked like him was her favourite and she wanted to choose his route?
I feel like it's mainly the pacing/flow. Before serialization, it could be whatever they felt like. With serialization, they need to meet page numbers and whatnot.
If her name is really written as something like ラビア (Ra-bi-a), your thoughts aren't entirely off the mark. Either the author doesn't know anatomy and didn't plug it into Google or they knew.