Nothing drives a revolt forward like the right leader, especially one who is a young girl known for performing miraculous feats of valor on the battlefield. From Joan of the Arc Coast to the infamous Falka, history is full of women who led fanatically devoted hosts to victory. Interestingly, all those heroines were not only charismatic, but also extremely beautiful. Saskia, whom men would follow into fire, was no exception. She was a smooth-skinned lass with blonde hair, dark brows, large eyes and shapely lips. Her full breasts perfectly complemented her rounded hips. In other words, she was the ideal icon for a rebellion.
News had already reached us of the heroic Saskia, the woman who held Kaedwen's armies at bay. At the time, however, it all seemed like little more than exaggerated rumors.
As with any true hero, there were many incredible tales about Saskia. Some claimed she was invulnerable to fire and had thus survived that terrible battle when Sabrina had rained the very flames of hell down upon the combatants. The girl was also famous for killing a dragon. One would be hard-pressed to find better material for a local hero.
If Geralt chooses Roche's path during the end of chapter I:
Word of Saskia's deeds had traveled far beyond Aedirn's borders. She was a heroine in the eyes of many. What surprised me most was that she had made an impression on Iorveth, who had high hopes for her.
Even Iorveth grew doe-eyed when he gazed at her. This was especially puzzling because Scoia'tael are generally unmoved by human women, even those who are thought to be extremely beautiful.
Once Geralt discovered the whole truth about Saskia, all the pieces of the puzzle fell into place. Saskia, a high-bred dragon, could assume any form she desired – even that of a human.
Saskia had achieved a great victory, adding another chapter to her legend. There was, however, something baffling about the speed with which she set off for Loc Muinne, where she hoped to convince the rest of the North to recognize the Pontar Valley as an independent state.
Saskia was no longer her own mistress. He – or she – who could command the dragon, stood to attain great power indeed.
All were surprised when Saskia appeared. The dragoness quickly demonstrated herself to be a lethal tool controlled by someone else.
Geralt can only side with Saskia during chapter II if he has previously helped Iorveth escape.
Saskia is a dragon with polymorphism ability. Her real name is Saesenthessis. She is also a daughter of Borch Three Jackdaws - also a dragon but unlike her father she is not a Golden Dragon and therefore can only assume one human form.
One of the dialog option in the end if we lifted the spell makes us understand that The "Virgin of Aedirn" may not actually be a virgin. She tells indeed that she likes dwarfs, probably a "dragon thing" she says and that Iorveth, as an elf, would only be a compromise (since a human would be degrading).
If Geralt chooses Roches path in act I, he will never find out that Saskia is the dragon.