Sarah Jessica Parker is opening up about her recent feud with a woman who suggested the actress' twin daughters with husband Matthew Broderick are not biologically their children as they were born via surrogate. In April (14), the Sex and the City star went on a fiery rant on Twitter.com after one of her followers, relationship expert and author Sarah Symonds, allegedly questioned the parentage of the actress' four-year-old daughters Marion and Tabitha. Parker wrote, "I'm certain there isn't a woman on this planet who would support your specific kind of cruelty. No apology, no explanation... You should be ashamed... I hope more people join me in voicing their objection to and holding accountable, uninformed and unkind women like yourself who find pleasure and delight in attacking other women." Symonds subsequently deleted the post, but that only fuelled Parker's rage, as she added, "Your anonymity doesn't diminish your outrageous and vulgar tweet. And your deletion only reveals your cowardice." Now, in an interview with fashion magazine The Edit, Parker calls out Symonds for targeting her. The actress says, "I don't think you can be like that without thinking about what you are saying. Other people can be mean, and that's something I just have to make peace with. "I thought, 'Well, this isn't unhealthy paranoia, this is absolutely conscious. This was a choice.' She, not subtly at all, said that my children are not my children. There have been a few - let's say half a dozen - times in my career when I have wanted to respond. I don't want to encourage people picking on her, because that's no better. But I wrote back, 'What? Like, is this fun?' She never responded and deleted it." "So I can't figure out what she hated so much about me that she did that. And I just can't imagine anything lower than that... I can't stand it when women say unfriendly things to other women. Why does it have to be like that? Why do we go from I disagree with you to I hate you, I attack you, I use words that I know are hurtful? And we've never met! "You'd think at this point in my life I would be accustomed to it, but we keep finding new ways of expressing ourselves, new outlets to be unfriendly and cruel."