Assalamu alaykum, thanks for joining the community here sister Aida.
Am afraid at the moment this site doesnt cater for open discussions of such a nature at the moment... and im not sure we ever will.
For several reasons.
I have had a quick look at that forum, and it looks as if theree are non Muslims there, who are only there to argue ad nitpic on issues which they have absolutely no knowledge about. - If they are learning stuff from anti-Islam sites which feed misconceptions and ignorance, and they are not willing to listen or take their time to learn from Muslims, then it is of no use to talk to such people.
Even if the people are sincere, It takes time to respond and analyse arguments and personally i have not got time to go into debates..
So at the moment those sorts of topics are discouraged here. Plus, dont want to attract the wrong sorts of people here. I.e people with anti-Islam agendas who go about learning Islam from biased orientalists.
I think it is best that Muslims spend their time learning and studying Islam, and not falling into lengthy online debates etc. The latter is a waste of time. It is much more beneficial for us to learn a passage from the Quran than to spend a few hours writing messages on a forum to some people who do not want to listen.
As for the sister you talk about pink_hijabi, she is in the wrong place to be learning about Islam. Those people just talk rubbish and with no knowledge, if she has questions or doubts, it is important she gets in touch with an Imam or an Islamic scholar.