She made a wight with Tsukiko's Amazing Wight-Making Spell, which happens to have no verbal component. Who cares? I sure don't.
If you are looking for moment-to-moment rules accuracy from this comic, you probably should stop reading. You are guaranteed to be continually frustrated and disappointed, because I don't care about that at all.
Asked, answered, thread locked before people try to guess what the stats of that spell are.