I actually saw your thread about the Winged Ones on the AGDI forums a while ago and I've been meaning to reply to it for a while. I never thought of those portraits of Azure and Aeriel depicting them as living statues. That would certainly have been a different experience if they had remained that way in the final draft of King's Quest VI.
I also think you might be right about that woman being Valanice. It's kind of interesting, since she resembles Valanice as she appears in King's Quest VII (the neck ruff, the hair style, barely visible earrings) a lot more than Valanice as she appears in most of the previous KQ games (hair in a bun, large hoop earrings, no ruff).