Stiles relaxed a little as Derek started to talk about his sister because the older male just radiated warmth when he did. Stiles doubted Derek even knew he did it but it was pretty clear that Derek had loved his family very much. It made Stiles' chest ache that such a wonderful guy went through such a horrible tragedy and came out of it not completely broken.
"Cora never took part of the pranks? Or was she a victim of them as well?"