Does the questioner have the right to supplicate against a woman he got to know, and then discovered that she is not what she seems, talks to foreign men on Facebook, shares her marital problems with them, and refuses to delete those who flirt with her under the pretext of benefit, and accuses the questioner of slander when he advises her? And will she be a person whom Allah will bless in her life? And is it permissible for the questioner to hate her? And must he apologize to her husband and his family whom he slandered because of her?

What this woman does by being lenient in her relations with foreign men is objectionable, and persisting in such relationships under the pretext of friendship, camaraderie, or politeness is contrary to Islamic law and fraught with peril; for temptation is not safe. Therefore, some jurists have stipulated the prohibition of speaking with a foreign woman without need.

You are not to curse her. Rather, both of you have wronged yourselves by being lenient in that relationship and speaking without need. Your duty is to repent to Allah and abide by His limits. If you wish to marry her, then propose to her family. Otherwise, sever your relationship with her and do not concern yourself with her affairs.

If you have backbitten the woman's husband and his family, and they are unaware of your backbiting, then the most preponderant opinion is that you should not inform them. Instead, suffice with repenting between yourself and Allah and seeking forgiveness for them.