Aries,
I think its unfair to expect someone younger to move, solely because another seat is someway less desirable unless there is a reason the woman needed the seat. Estherhamalka has said that the seat was just as comfortable.
Did Estherhamalka react correctly? Eh, it was juvenile. But she shouldn’t have been placed in that situation in the first place.
Of course I would give up my seat to an elderly woman who needed it (even while pregnant). I did that the other day on the bus because an elderly man came on and the front seats were full. I was in a lot of pain from overexertion at my job and having painful braxton hicks contractions but he needed the seat more than me.
But if the seat next to me was available? He would have sat down on that one.