I do not think a girl crocheting would even raise my eyebrows. If I showed up and a girl began doing her make up I would assume she had a slight interest in attracting me however. If she was already doing her make up I would not raise an eyebrow however.
I have not taken a train since the 1960's. I used to ride the bus to work however. I don't recall seeing anyone doing makeup. crocheting was fairly common sight and I cannot identify an age group. My daughter is in her thirties and does crocheting but I don't think she rides the bus.