Which is the other way around, the Elf debate, if you will. She's 50, but that's like 14 for an elf. It's messy either way you cut it, but this was a porn game, and they knew it was a porn game when making the lore. When it appears in porn, it's normally shown in that way, or it's your 500 year old loli vampire.
This way around it's "Dude I scored with a 12 year old, but it's totally legal, 'cus her kind are stacked when they're 12." But it's worse, because Marble was at Witney's farm for years, meaning she was an adult even younger than that.
And again, they did not need to write it this way, it was a choice. They did not have a moral high ground, at most they had a mole-hill, and actively bated those kinds of mods to be made.