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Insight's eyes being green with envy is very much a happy accident. Her newfound abilities are definitely not under her control and she is lost almost in vertigo. Definitely in need of a warm blanket and cuddles all around. 

I've always had in mind the Prisoner is 7 feet tall. Insight would be around 5'4" or so. In this position she feels his physical and metaphysical weight pressing down on her. Both physically and magically pinned down by a heavier force.