[ryusage]

Eh, I don't think they said that at all, and that doesn't make sense anyway. They would need to add an extra 3D model or two obviously, so sure, that's a bit more work, but in the big scheme of things it's very straightforward. By "modeling and movement" algorithms, I assume you mean animations, and I don't see any reason at all that they couldn't just use the same skeleton as the male characters, which negates the need for new animation work.

I'm not sure what the point of your second statement actually is, but I disagree with that too lol. I feel like you're making the easy parts sound very difficult and then completely trivializing the part that's actually a lot of work.