There's nothing wrong with this Poster.
It's only saying what I think we all say to teenage girls when they go out : "stick together"
I know that I, and my DD's friends parents have always said this. You know, like, "don't split up", "get a taxi together", "don't leave anyone behind"
The fact that anyone can take offence, because "it's aimed at women/there isn't a similar poster for men", is more worrying to me.
Why on earth do we have to pretend that men and women are the same? They aren't. It's Political Correctness gone mad.
I have a son and a daughter. I would be more worried about my daughter walking through a dark alleyway than my son. That's because my son is over 6ft and quite well built. Daughter is a tiny framed and 5ft 2. And, there are more male predators than female.
Bring back common sense, FGS.