This young women was Taraneh Mousavi, allegedly she has been raped and other sources say she has been murdered after. She has been arrested on the 28th June near Ghoba mosque in Tehran. A burned corpse has been found near Ghazvin. Story here and here.
UPDATE: this story was a hoax, anyway it has been recorded even by Amnesty International, so... anyone can make a mistake. The whole thing is quite unfortunate, first: because the story as it was made up, was plausible, because this kind of atrocities happens. Second, because fake stories harm the sincere intentions of the activists (including myself) and turns to a weapon in the hands of the IRI to accuse the opposition movements of lies. Unfortunately one can not verify each single story and therefore I apologise for having posted it.
More information here.