Good for you, Girl! It's really important that you have this special time with your DD.
I think the mum at the train station had had a number of very hard days, by the looks of things. I hate to see someone come to that point and vent all their frustrations on their kids. It's not their fault they're inquisitive and excitable. That's good qualities to have in a child, but some people dont know how to see that, or manage it.
You must miss Melbourne! I didn't grow up here, but came down from Qld on my own and finished year 12 here. I've been all over the place and back and forth lots of times now, but I always end up back in Melbourne. I love it here.