apushatayid, when I was a kid I was taught to ALWAYS think about getting up and giving someone else my seat and I taught that to my kids as well.
We were in La Vista in ’87. I walked into the lobby for an event and an elderly lady came up to me and pointed to my then 9 year old son and said “is that your child?” I got nervous for a second thinking “oh my what could he have done?” and answered in the affirmative. She said “a brocha oif zan kupf, you did a good job! He saw me walking into the room and ran to the other room to carry a chair in for me! Even the teens didn’t think of that!” I smiled and said, “Yes of course, that is what he learned from us and from my parents.”
So if my 9 year old learned that, I could expect that girls of that age and older 20 years ago could have done at least stood up.