I commute into London from outside the M25 by train. Today I (eventually, because I had been reading) noticed young woman who was standing was pregnant. I offered her my seat, but she refused it. I said " you really should take it": she still refused it. Eventually a man got up and moved to get off, and she took his seat. When I got to London, I noticed another woman, with a 'baby on board' badge standing just behind my seat.
When I was pregnant, after nearly fainting once, I always made sure I got a seat, asking men if I could have their seat if necessary (in case a woman I asked was also pregnant). No-one ever refused and most were embarrassed at not having noticed. I never expected anyone to notice, as they could be deep in a paper or whatever.
AIBU to say more strongly that the women could be more assertive? Or do some women prefer to stand? I don't want to be bossy...