With all due respect, Lindsey, Sierra (Vivendi) not only has no knowledge of King’s Quest VII or passion for it, they probably won’t read your book, and even if they did, would never put together Etheria in your book and KQ7.
Basically, unless you mention King’s Quest or Rosella or whatever, you’re home free.
Excuse my seeming callousness, but really- Vivendi won’t care unless you actually write to them and alert them of your work, in which case you’ll probably get a ‘Our copyright’ email. What else are they going to say.
– Alistair