Because we're *the guro community* there are pretty much no agreed upon no-nos.

This getting back to that model seems unlikely enough. You'd have to be a good enough artist that her resemblance comes through, and she a unique enough model, and it would have to become a popular enough work to get noticed by someone who would frown upon it and tell her.

Personally I'd love to see it. Not many guro artists work out full stories. I wouldn't recommend using real peoples faces in the future, but all good artists learn and base work off reality.