Was just thinking about this today... why not make an all female mosque for women then i Pk if they can't make woman's section or the men are so bad they'll even hoot and holler if they see women in a mosque.
I am in UAE right now and its awesome how every place has a mosque and every mosque has a woman's section! Even though people may say Dubai is liberal has all this alcohol and half dressed tourists I am so impressed by the availability of places for people (including women) to pray at all times and in all places!
There could also be the reason that mosques in pakistan do not have seperate place for ladies and also the mosques are in very tight places where intermixing between the genders is highly possible. It is pretty different situation in Pakistan. If people can hoot at you and whistle at you when you are walking in a bazaar etc what is stopping them from doing it when you are walking towards the mosque? Shareef gharane ke auratain and aurtain in general ghar mai hi namaz parhleti hain and women are not farz to go to mosque for daily prayers etc. I have personally experienced something tragic so i am coming forward. Here in Dubai it is different and many times i have prayed namaz in the AR mosque.