The WidowReturn back to Canneroc where the village is attacked by spiders. Save the townspeople. Don't let them die or they're gone for good.
Once the spiders are dead, talk to whoever you left in charge. Once you explain that the The Widow is responsible, you will be sent to Cathrus to find the The Widow.
Outside, you'll be offered a chance to Kill the Villagers.
Killing the Residents is a bad route to choose. You gain FAR greater rewards from killing The Widow. If you really want to kill civilians, just make a save and then go on a rampage. Revert back afterwards.
Caution: Quest may be glitched, where the widow will not appear at the beginning of cathura, she is in fact still back at castle yolvan you can talk to her there, Where she will teleport to the front of the Cathura Caves, as opposed to the very end of the Cathura caves. To get around this go through the caves and clear out the spiders, BUT do not enter the final chamber or it will send u back to the beginning of the cave where the widow is standing. Instead, after clearing out the spiders go back to the beginning of the area where the widow is standing, and attack her like a civilian, go into aggressive mode and attack her again, train her all the way to final chamber where you can take her on properly without the boss battle glitching.
Or go into Reckoning Mode and kick her ass before she glitches back into the tomb thing;D