Ilaria is out with a hunting party one particularly bad winter and gets seperated in a blizzard. She's attacked by starving wolves. She manages to fight them off (my girl is an archer primarily, but she does carry a pair of daggers in case of close combat) and essentially wanders around in the blizzard for days trying to keep her wounds from becoming infected and only survives because her fever kept her temperature skyhigh, and while she fought off the wolves they stalk her the entire time, waiting for her to die because there's nothing else to hunt. She makes her way back to the hunting party eventually, who take her back to her Keeper who is able to mend the muscles and infections but not the scars.
For me it always makes the blizzard scene immediately after Haven, and the Fade scene particularly bad for her. When she was almost delirious from the pain while she was still lost, her dreams twisted the wolves from pathetic creatures trying to survive to grinning, whining demons with glowing yellow eyes, to the point where she held an outright phobia to any wolf, and certain dogs.
She gets over it eventually while travelling in the Frostbacks (since they're swimming with wolves), and with a little help from Cole and Solas (heh!), but it's still her biggest fear and what she sees in the Fade.
I draw her always covering her right arm with some leather strips or bandages of some kind because she's sensitive to her horribly scarred and mutilated arm, and she has nast scars on her side too.