I think that one could construct Amanda in a prequel through a variety of characterizations. I would think that a part of this would be depicting her as a woman that upheld the standards of traditional femininity. Her emphasis to Laura about her physical beauty, the presence of "gentlemen callers," and the entire notion that she creates for her children that she was the center of all attention represents a traditionalist notion of what it meant to be a woman. I think that a part of this would be to construct her character as someone who would represent social popularity and power. Amanda is quite happy conforming to a standard where women are power brokers based on their physical appearance and the stature they gain through social recognition. I think that a prequel would explore this dynamic in her upbringing, reflecting this behavior encouraged by her own mother in much the same way that she encourages this in Laura. At the same time, I think that a "prequel" might explore how power is seen in purely social terms and that personalized notions of identity are deferred for this social construction. This would have to be part of her upbringing as it is such a part of how she carries herself throughout Williams' drama.