We must remember that we are human beings, not robots, and sometimes we act spontaneously. The lady was wrong in assuming the pregnant lady was pregnant, but I think about she felt after having her hand pushed away and dismissed so rudely. There could have been a gentler way to deal with it.
No, of course it’s not! Sure, a two year old would not understand the message, but I have a five year old grandson who would want to know what that meant, and would keep on asking. Besides - Easter crackers? How long have they been around?