It seems that maybe Bristol herself is being misconscrewed.
Whether her comments about abstinence not being realistic are descriptive or prescriptive are, at the very worst, not clear. We know they are descriptive. God sometimes described His people in an analogous unflattering manner. For that to be prescriptive would have been a grave wrong. But it is not clear that is what Bristol meant.
Bristol did express her wish that none others follow in her footsteps. With a modicum of charity, this can be taken as the definitive statement on the matter.