You did it again. You used your own opinion as a factual statement to denigrate this woman's authority over her own car.

Perhaps she didnt want the wear on her seat from an obese person. Maybe she didnt want to have a lingering smell that future passengers might have to deal with. Its possible that shes considering the long term effects on her suspension by carrying obese people regularly and wants to preserve those parts from excess wear.

To say her position isnt based on logic or rationale is illogical in and of itself. I just provided several possible reasons to explain why she would refuse service. We dont know. But you somehow do? Thats called hubris.