Would she be more amenable to additional guest space? Perhaps you could develop a design plan for brick Cycad beds that house pull out guest beds beneath them and have rolling privacy shades on the glass that can be used on occasion of guests staying over?
That glass house would look incredible with a tiled mosaic floor, is she artsy/craftsy at all? Maybe the thought of designing and laying a unique tiled mosaic would give her food for thought?:
