from the rule books
assuming it takes more than 4 rounds to masticate a corpse beyond functioning, tsukiko is still potentially in this.Any humanoid slain by a wight becomes a wight in 1d4 rounds. Spawn are under the command of the wight that created them and remain enslaved until its death. They do not possess any of the abilities they had in life.
provided the giant cares to stick the rules here.