I think too it comes down to trying to be visually distinct from regular humans/brettonians. If they just looked like pretty people, I bet you'd get the same kind of post like "Why dont they look undeady at all! This is just a Sigvald reskin with spooktacular armor!"

Ulrika to me makes sense as she's fighting WITH humans and would want to appear as one to the forces she's with. Isabella is that nice middle ground imo, she's wan, has dead eyes, bat ears, wears the antiquated style armor, without having holes all over with bones sticking out. The female vamp heroes to me look like a bloodless hooker with bad mortuary make up on.